2500w phase control

Posted on Feb 5, 2014

This circuit controls resistive and inductive loads up to 2, 500W. It`s main functional device is an integrated phase control circuit - Siemens TLE3103. It contains its own power supply, a zero voltage crossing detector circuit and a logic driver. An additional feature is the low voltage input to enable/disable triac firing enabling/disabling the l

2500w phase control
Click here to download the full size of the above Circuit.

ogic driver. The function is as follows: pin13 TLE3103 open (floating), trigger output active, tied to ground trigger output disabled. An UP and a DOWN button control a 32-step digital potentiometer (IC2, AD5228) via the debouncer IC1 (MAX6817). The potentiometer has a power on reset pin which might be tied to ground causing the potentiometer to start at midscale, or to VCC causing it to start at zero scale. The desired function is selectable using jumper JP1. The triac (capable of driving 40A loads) is a bit overkill for the desired power but the BTA41 has an isolated body and therefore handling of the board under voltage is less dangerous as it is with phase on the package. The circuit uses a 68 H inductance, but this might be replaced with a 100 resistor, then replacing the inductance C5 should have a value of 47nF.

Leave Comment

characters left:

New Circuits



Popular Circuits

Adjustable function generator
Digital thermometer with LED / LCD display
Fun with LEDs
Voyager MkII Page 1
very simple VCA circuit
Accelerate the role of capacitance