The purpose of this circuit is to find two resistors with very close values for critical projects. The circuit was found in the November 1995 issue of Electronics Now magazine.
This circuit was found in a Mullard transistor manual from 1960. Note the symmetrical power...
This amplifier step with a transistor has an input impedance of 100k to 10 M. The transistor can be any...
I found this little signaling transmitter in old American documentation. The circuit has a good...