This test instrument was found in the April 1991 issue of Radio Electronics magazine. The circuit has good signal strength.
This 10 kHz filter is based on a 741 operational amplifier. The circuit is from Electronics Now...
The circuit shown is from the 1994 Linear Applications Handbook from National Semiconductor. The...
We found this circuit in the 1957 Raytheon transistor application manual. The transistor can be a...