This design now can only lights, circuit diagram in this, please help

CodePudding user response:

Oscilloscope for check whether square wave output, and the square wave output frequency and amplitude.

CodePudding user response:

Look at your circuit diagram according to the given parameters, the resistance of the capacitor can be speculated that the frequency is too high, so only see light.

CodePudding user response:

Also measure 555 output voltage amplitude, enough to drive the lower circuit?

CodePudding user response:

reference 3 floor wise men know already should good karma response:

also measure 555 output voltage amplitude, enough to drive the lower circuit?

Good?? , thanks a lot, but also need to modify the circuit, or the functions to meet the requirements