Microammeter (T465E)

Found in a 1948 MIT documentation, this circuit uses a 0 to 100 uA microammeter as an indicator. The power supply is 150 V.

Li Ion Charger (CB5411E)
This charger makes use of the LTC4026. We found it in a 2005 Linear Technology publication. The circuit...
5 V Suqare Calibrator (CB5348E)
This circuit was found in the National component manual which is not currently simple to obtain....
AC Amplifier Using the 741 (MSB038E)
In the circuit shown by figure 1, a10 mV AC signal applied to the input produces a 1 V signal in...