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.


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