AN4993 Application note How to implement an SCR or a Triac in hybrid relay applications Introduction This document gives some key information about the design of the solid-state silicon AC switch stage of a hybrid relay, which can drive resistive, capacitive, or...
How to test an SCR Testing SCR using a multimeter. A multimeter can be used to test SCRs quite effectively. The first procedure is to check the diode action between the gate and cathode terminals of the SCR. This test is just like what you have done in the case of testing a silicon d...
Even though I haven't used them all up in all the years I've had them, they've been sitting in my parts drws for so long. I'll get back to you. I'll also test the transistor for the buzzer circuit and see if that's ok with your right swagatam. I underestimated the LDRS sup...
Next, connect the calculated value of resistors as discussed in the previous section to any one of the free ends of each series, you can connect the resistor at the positive end of the string or the negative end, the position doesn't matter because the resistor just needs to be in line ...
faulty SSR turn-on. Although this false ignition does not damage the SSR as a voltage spike induced by di/dt does, it is obviously still a problem. To prevent this occurrence, an RC snubber circuit is also added to suppress the sudden rise in the voltage seen by the TRIAC (Figure 1...