Monday, December 14, 2020

How to Make High Voltage Half-Bridge With Current Feedback Using L6390

Eltronicschool. - The main component in this project of high voltage half-bridge with current feedback is L6390 IC from ST Semiconductor. With this IC, we can use it to build DC motor speed controller and field-oriented control (FOC) motor driving application, induction heater drivers, DC-DC converters, EHT drivers, battery chargers, and LED drivers.

In this project we will show you the schematic diagram of High Voltage Half-Bridge With Current Feedback Using L6390, all component used, global description, and the last will give you link to read more about this project from original source.

Circuit Schematic

Figure 1. Circuit Schematic of High Voltage Half-Bridge With Current Feedback Using L6390 (Source: Electronics-Lab)


Component Part



Description

Circuit schematic like in Figure 1 above is High Voltage Half-Bridge With Current Feedback Using L6390. From Electronics-lab site describe that the L6390 is a high voltage half-bridge gate driver. This device can be used in all applications where high voltage shifted control is necessary. The devices have a driver current capability best suited for home appliance motor driving ratings, and they are also equipped with patented internal circuitry which replaces the external bootstrap diode. This feature is achieved by means of a high voltage DMOS synchronously driven with the low side gate driver. The L6390 is a half-bridge driver with several functions such as externally adjustable deadtime, interlocking, smart shutdown (patented), fault comparator and a dedicated high-performance op-amp for advanced current sensing. The outputs can be driven by two dedicated logic signals or, alternatively, only one logic signal by connecting the two inputs together. Device outputs can sink and source 430 mA and 290 mA respectively. Prevention from cross conduction is ensured by interlocking and programmable deadtime functions.

Dead Time: R8 provided to set the Dead time. The dead time can be set to a wide range of values from hundreds of nanoseconds to a few microseconds. In order to avoid any possible cross-conduction between the power MOSFETs/IGBTs of the half-bridge, the L6390 provides both the dead time and the interlocking functions. The interlocking function is a logic operation which sets both the outputs to low level when the inputs are simultaneously active (HIN to high level and LIN to low level). The dead time function is a safety time introduced by the device between the falling edge transition of one driver output and the rising edge of the other output. If the rising edge set externally by the user occurs before the end of this dead time, it is ignored and results delayed until the end of the dead time. The dead time can be adjusted externally through the value of the DT resistor R8 connected between pin 5 and GND. A capacitor C4 1 KPF ceramic capacitor in parallel with this resistor is provided for noise immunity.  and interlocking function management are described.

Smart Shut-Down: The L6390 integrates a comparator for fault sensing purposes. The comparator has an internal reference voltage Vref on its inverting input (see L6390 datasheet), while the noninverting input is available on pin 10. The comparator input is connected to an external shunt resistor R17 in order to implement a simple over-current detection function. The output signal of the comparator is fed to an integrated MOSFET with the open drain available on pin 2, shared with the SD input. When the comparator triggers, the device is set in shutdown state and both its outputs are set to low level leading the half bridge in tri-state. In common over-current protection architectures, the comparator output is usually connected to the SD input and an RC network is connected to this SD/OD line in order to provide a mono-stable circuit, which implements a protection time that follows the fault condition. Unlike common fault detection systems, the L6390 smart shutdown architecture allows to immediately turn-off the output gate driver in case of fault, by minimizing the propagation delay between the fault detection event and the actual outputs switch-off. In fact, the time delay between the fault and the outputs turn-off is no more dependent on the RC value of the external network connected to the pin. In the smart shutdown circuitry, the fault signal has a preferential path which directly switches off the outputs after the comparator triggering. At the same time the internal logic turns on the open drain output and holds it on until the SD voltage goes below the SD logic input lower threshold. The smart SD system provides the possibility to increase the time constant of the external RC network (that is the disable time after the fault event) without increasing the delay time of the protection. Any external signal provided to the SD pin is not latched and can be used as control signal in order to perform, for instance, PWM chopping through this pin. In fact, when a PWM signal is applied to the SD input and the logic inputs of the gate driver are stable, the outputs switch from the low level to the state defined by the logic inputs and vice-versa., 

And now you can read more about the project How to Make High Voltage Half-Bridge With Current Feedback Using L6390 from original source using link HERE.

Monday, November 9, 2020

Circuit Schematic of Dimmer Lamp Based on Triac BT136

Eltronicschool. - Do you want to adjust your Halogen lamp, light bulb up to 250 W, we recommend to use this circuit schematic and you can do it yourself. This circuit schematic is Triac Based Lamp Dimmer using BT136 and DB3 as Diac for Triac triggering.

In here beside we will give you circuit schematic of this dimmer lamp, here we also will give you description and feature of this circuit.

Circuit Schematic

Figure 1. Circuit Schematic of Dimmer Lamp Based on Triac BT136 (Source: Electronics-Lab)


Component Part
  1. Triac
  2. Diac
  3. Resistors
  4. Capacitor
  5. Variable Resistor
Description

Circuit schematic like in Figure 1 above is Circuit Schematic of Dimmer Lamp Based on Triac BT136. Triac based Indecent lamp dimmer is a simple circuit and it doesn’t requires additional power supply, works directly with 110V AC or 230V AC.

Based on Electronics-Lab site describe that this circuit is a low cost dimmer circuit for adjusting the light brightness of incandescent, Halogen Lamp, Light Bulb load up to 250 W. this circuit consists of BT 136 Triac, resistors and capacitor.  CN1 connector is for Load connections and CN2 connector for power supply connections.
  • BT136: It is a sensitive gate Triac, used in general purpose bidirectional switching and phase control applications where high sensitivity is required.
  • DB3: It is a DIAC that functions as a trigger diode with a fixed voltage reference.  It can be used in conjunction with Triac for simplified gate control circuits or as a starting element in fluorescent lamp ballasts.

Features:
– Input supply: 230 VAC or 110 VAC
– Output: 250 W
– Triac controlled
– On board Potentiometer for adjusting level
– Power Battery Terminal (PBT) for easy input / output connection
– Four mounting holes of 3.2 mm each
– PCB dimensions 40 mm x 34 mm

How it works

This circuit is used as a Light dimmer kit.  It is used to adjust the brightness of the Halogen Lamp, Light Bulb up to 250 W.  A power supply of 230 or 110 VAC is supplied to the kit at CN 2 connector and a light bulb is connected at the CN 1 connector.  Using the POT we can adjust the brightness of the bulb.

Tuesday, September 29, 2020

AC Dimmer 220V/50Hz for Adjusting Alternating Current Max 2000W

Eltronicschool. - Now we will give you one useful electronic device that called with AC dimmer 220V/50Hz using main component SCR that can be used to adjust the level of alternating current voltage 220V/50Hz.





This product very useful for all of the tools that used 220V/50Hz power motor like Grinder, Electric Drill, motor, and others. This product also very suitable to adjust the temperature of our tools like the soldering iron, oven, and other. You also can use this product to dimme the lamp (not LED) in your home and other.

for more information about this product please visit some link below:

2. OLX

Monday, September 28, 2020

Texas Instrument with TCA4307 Hot swappable I2C bus and SMBus buffer with stuck bus recovery

Eltronicschool. -This is one of the Texas Instrument product with the name TCA4307 IC as hot swappable I2C bus and SMBus buffer with stuck bus recovery. This IC is is a hot-swappable I2C bus buffer that supports I/O card insertion into a live backplane without corruption of the data and clock lines. 

Image Courtesy of Electronics-lab


In this post we will give you global description and specification of  TCA4307 Hot swappable I2C bus and SMBus buffer with stuck bus recovery and the last we will give you the link to get more information about this product.
Description

Based on Electronicslab site describe that Texas Instruments’ TCA4307 is a hot-swappable I2C bus buffer that supports I/O card insertion into a live backplane without corruption of the data and clock lines. Control circuitry prevents the backplane-side I2C lines (in) from being connected to the card-side I2C lines (out) until a stop command or bus idle condition occurs on the backplane without bus contention on the card. When the connection is made, this device provides bidirectional buffering, keeping the backplane and card capacitances isolated. During insertion, the SDA and SCL lines are pre-charged to 1 V to minimize the current required to charge the parasitic capacitance of the device.

The TCA4307 has stuck bus recovery, which automatically disconnects the bus if it detects either SDAOUT or SCLOUT are low for about 40 ms. Once the bus is disconnected, the device automatically generates up to 16 pulses on SCLOUT to attempt to reset the device which is holding the bus low. When the I2C bus is idle, the TCA4307 can be put into shutdown mode by setting the EN-pin low, reducing power consumption. When EN is pulled high, the TCA4307 resumes normal operation. This buffer includes an open-drain READY output pin, which indicates that the backplane and card sides are connected. When READY is high, the SDAIN and SCLIN are connected to SDAOUT and SCLOUT.


Specification

Features Buffer, Enable Pin, Hot swap, Stuck bus recovery
Frequency (Max) (kHz) 400
VCCA (Min) (V) 2.3
VCCA (Max) (V) 5.5
VCCB (Min) (V) 2.3
VCCB (Max) (V) 5.5
Supply restrictions VCC Single Supply
Approx. price (US$)
1ku | 1.90
Rating Catalog
Operating temperature range (C) -40 to 125

For more information, please visit the original source using link HERE

Tuesday, September 15, 2020

Circuit schematic of simple fire alarm using NTC Thermistors

Eltronicschool. - There are many fire alarm circuit schematic developed to help people give alarm when fired in some place. One of the circuit schematic of simple fire alarm is using NTC thermistors as it's fire sensor or detection.

In this moment we will show you one circuit schematic of simple fire alarm using NTC thermistor look like Figure 1 below. The main component in this circuit is thermistor for detecting and sensing the fire.

Circuit Schematic
Figure 1. Circuit schematic of simple fire alarm using NTC Thermistors (Source: www.circuitstoday.com)


Component Part
  1. NTC Thermistor
  2. Variable resistor
  3. Resistors
  4. Buzzer
  5. Diode
  6. Capacitors
  7. Transistor
Description

Circuit schematic like in Figure 1 above is Circuit schematic of simple fire alarm using NTC Thermistors. According to Circuitstoday blog describe that the Thermistor resistance controls the voltage across the resistor triggering the transistor switch. As the Thermistor senses an increase in temperature, its resistance decreases, that in turn increases the voltage across the resistor that triggers the transistor switch. The switch triggers the buzzer, hence alerting of a potential fire hazard.

These were some of the basic circuits that use Thermistors. These circuits are developed into advanced circuits to be used in various practical applications. Some of the practical applications include:
  1. Temperature controllers in mobile phone, refrigerators hair dryers etc
  2. Temperature measuring device to monitor temperature of exhaust gas, cylinder head etc.
  3. To monitor temperature to maintain the room temperature at certain desired level.
  4. As a temperature stabilizer in laser diodes and photo elements.

Wednesday, September 9, 2020

Free Download Proteus Professional 8.9 SP2 Build 28501 for Windows with Install Guidance

Eltronicschool. - This is the latest other version of Proteus 8 Professional for electronic designing software that called with Proteus Professional 8.9 SP2 Build 28501 for Windows with Install Guidance.

Proteus Professional 8.9 SP2 Build 28501 for Windows

In here beside we will give you free download of Proteus Professional 8.9 SP2 Build 28501 for Windows, we also will give you guidance on how to install this software easily in your PCor laptop.

Description

This is Proteus 8.9 SP0 Professional Plus Crack for Windows Installation for you who want to create simulation with ISIS and PCB layout design with ARES. Accordingly of Master Kreatif site describe that  is a powerful Computer-Aided Design (CAD) software that was specially designed to help designers build and verify the circuit boards easily. Proteus Professional provides interactive simulations and customizations tools that enable designers to view and edit the properties of every element on the board. It helps you design, test and layout professional PCBs like never before. The design can be edited, simulated, verified, as well as exported. Proteus Design Suite delivers the complete software package for today and tomorrow’s engineers with VSM simulation and new flowchart engine that provide a truly integrated and intuitive development environment.

By using this software you can create a highly complex electrical circuit designs requires not only solid knowledge but also a set of tools to get the job done. Proteus PCB Design enables you to design a PCB which there are very detailed electrical components such as microcontrollers, microprocessors, and other components are often used in electrical circuits.

How to Install 

1. Please download file Proteus Professional 8.9 SP2 Build 28501 from Mediafire

2. Open your file folder in your computer or laptop and Unzip it

3. Open folder and select Proteus 8.9 Sp2 Pro aplication and then click to begin installation process. And follow until finish.



Watch the Video on Youtube

Download 

And now you can click the link below to take free download Proteus Professional 8.9 SP2 Build 28501 for Windows from external server easily.

Tuesday, September 8, 2020

How to Make Electronics Lab Variable Power Supply

Eltronicschool. - In this time, we also want to show you about one project on how to make electronic lab variable power supply using some module that popular in electronic shop. With this project you can buil it your self and also you can publish to other and in the market. So, pelase follow this post.

Image Courtesy of Youtube


Material

1. Universal Box
2. DC Connector
3. ON/OFF Switch
4. DC Volt and Amp meter module
6. Potensiometer
7. Power supply module

Step by Step to Make Electronics Lab Variable Power Supply

To build or Make Electronics Lab Variable Power Supply, please watch the video from Youtube using link below.


How to Download and Install and Make 7 Segments Digit Led Display using Electronics Workbench EWB 5.12

Eltronicschool. - In this time, we also want to show you about one project on how to download, install and make 7 Segments Digit Led Display using Electronics Workbench EWB 5.12 that can help you using this software. In here we will give you link to download this software from other site. So, pelase follow this post.

Image Courtesy of Youtube


Material

1. Electronics Workbench EWB 5.12

Step by Step to Make 7 Segments Digit Led Display using Electronics Workbench EWB 5.12



To download Electronics Workbench EWB 5.12 for Windows system use the link below please.


To build or make Make 7 Segments Digit Led Display using Electronics Workbench EWB 5.12, please watch the video from Youtube using link below.


How to Make Inverter 12V to 220V From ATX PSU

Eltronicschool. - In this time, we also want to show you about one project on how to build or make DC to AC Inverter 12V from Battery to 220V using ATX PSU that can be used to turn on the AC lamp light easily. The main component in this project is 5V transformer from ATX PSU. So, pelase follow this post.

Image Courtesy of Youtube


Component List

1. 5V Transformer from ATX PSU
2. Transistor
3. Resistor
4. Bulb Holder
5. Cable
6. 12 Baterry

Step by Step to Build Make Inverter 12V to 220V From ATX PSU

To build or make Inverter 12V to 220V From ATX PSU, please watch the video from Youtube using link below.