mvs sarma said:Remove R3 and rest of circuit functions. go for functional tests of ESR measurement .
why it is not needed?!
also do you know what these "buffer amps" are?
do they amplify the output from the relaxation oscillator and seperate the
oscillator from the rest of the circuit?
RadioRon said:There is one other thing that might cause error in your measurement. That is that since the analog multimeter is probably a very high resistance, the time required for voltage to bleed off of C6 may be too large. .
this time i was using my digital multimeter...
RadioRon said:The value of 2.15 V at the transistor collector also seems to be good. However, this assumes that you have a capacitor across the test terminals TP1 and TP2. If you don't then this voltage is not correct. I will assume that you have a good capacitor there. .
no i don't have any capacitor connected...
P.S did you noticed that i'm not getting anything on R7-R8 this is normal?!
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