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biasing jfets taking meters impedance in account

PostPosted: 09 Dec 2014, 00:30
by jimiguitar
when measuring jfets for biasing do i need to take my meters impedance 10 meg into account and add that to the circuit

Re: biasing jfets taking meters impedance in account

PostPosted: 09 Dec 2014, 06:53
by grrrunge
jimiguitar wrote:when measuring jfets for biasing do i need to take my meters impedance 10 meg into account and add that to the circuit

If you're measuring the transistors in-circuit, i would say no. Unless your bias network introduces an impedance large enough to make the extra 10M in parallel significant ;)

Re: biasing jfets taking meters impedance in account

PostPosted: 10 Dec 2014, 05:19
by jimiguitar
thank you for the the reply i got confused i thought my meter might be effecting it but it depands were your meter probes measure where where your negative and positave they get 2 different readings that depends