> Are 4 and 5 regulated? Or is the zener picked to compensate for the VBE > drops? > > Any of these circuits where the output transistor is in an emitter > follower configuration will have its noise effected by the load current, > since that current directly effects the output transistor transconductance.
The load in all cases was a couple hundred mA worth of resistance at the voltage in question, as I recall. It's been a few years since I captured these plots. The Zeners were just whatever parts came to hand, 1N474x parts basically. I didn't care about the 1.4V drop across the Darlington, just the resulting noise. -- john Miles Design LLC _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
