hello
i have built a video transmitter circuit.its not working. the last transistor (Q4) is not turning on. the voltage on the base is zero. i don't see where the (Q4 TRANSISTOR) base gets its voltage from. is the circuit correct?is the biasing correct? please give me some suggestions.
i have built a video transmitter circuit.its not working. the last transistor (Q4) is not turning on. the voltage on the base is zero. i don't see where the (Q4 TRANSISTOR) base gets its voltage from. is the circuit correct?is the biasing correct? please give me some suggestions.
Attachments
-
78.5 KB Views: 46