bt136 circuit
Hi
In the given circuit, I am taking output from a microcontroller and load is a small electric bulb , 230 V , 50 Hz.
Please see the circuit diagram below and the test results and help me with the debugging
Circuit Diagram is
https://obrazki.elektroda.pl/21_1228334288.jpg
MOC3020 & BT136 crcuit testing
a) On giving 3 or 5 V input on the control side, still no output voltage observed on load side.
b) Resistance value on control side of MOC was shorted still voltage obtained in between doesn’t change.
c) 3 copies of this circuit was fabricated and bulb was put in all the three one at a time, still bulb didn’t glow ..i.e. there’s no problem with any device, there may be some logical problem.
d) Software is working fine. We checked it with LED and also by checking voltage at the control side of MOC3020.
e) When the connection between 1&2 or 2&3 of BT136 is shorted, bulb glows.
f) Blinking time was changed from 3 s to 5 s to 20 s. still it didn’t work.
h) Expected problem : MOC isn’t able to drive the load side.