Triac Schaltung Dimensionieren. With switch sw1 open no current flows into the gate of the triac and the lamp is therefore off. The triac can function as a switch it could enable a trigger pulse of a low power switch to turn the triac on to control a much higher power levels that might be possible with a simple switch.
Jorg Rehrmann Elektronik Ingenieurburo Fur Entwicklung Elektronischer Schaltungen Und Systeme from www.joretronik.de
Am ton soll hörbar sein wie hoch der widerstand ist. The setting of p1 determines the phase of the trigger pulse that fires the triac. In this circuit the resistor r1 may be 100r or more dependent upon the triac in question.
A triac is a five layer three terminal semiconductor device.
The triac structure is shown below and it can be seen that there are several areas of n type and p type material that form what is effectively a pair of back to back thyristors. The gate terminal is connected to both n4 and p2 regions by a metallic contact and it is near to the mt1 terminal. Am ton soll hörbar sein wie hoch der widerstand ist. The circuit above shows a simple dc triggered triac power switching circuit.
