MSN: TRIAC: qué es, cómo funciona y ejemplos con BT136 y MAC97A6
Hi, In a dishwasher machine main board we have used 107NN0 triac for controlling ac loads such as valves, pumps, dispenser, etc. In about 2 to 3 percent of products sold to customers, one of triacs that has a parallel RC equivalent load is half-burned (triac is short-circuited in one direction)...
These use a triac control readily, sometimes a bridge is added. All you need to do to confirm it is to lift or otherwise insulate one brush and measure the motor terminal resistance for open circuit.
The triac that's connected to the heater T2 (terminals A1 & G), on the diode setting of the multimeter, reads .072, and the other triac T1 reads .037. The triac numbers are:
A SCR/Triac will conduct once the gate current has occurred, and will remain on as long as the controlled load voltage is present, in the case of a Triac switching a AC voltage the AC reverses every half cycle, which requires that it transitions through a zero point at this time, therefore when the zero point (zero voltage) occurs, the SCR will turn off and remain off until the next trigger ...
Building a dark sensing circuit and using a Triac to control a lamp ...
I am looking for a way to make a "light dimmer" (actually controlling a heating coil) using a triac, where I can control the duty cycle of the AC based on a DC voltage. In searching for such a circuit, I either find: 1) The basic light dimmer using a triac with a diac and a variable resistor...