We found this circuit in the Linear Applications Handbook by National Semiconductor. It uses the LM3900, an operational transconductance amplifier as a base. Q1 can be a 2N2222 or similar.
This circuit was found in a 73 magazine for radio amateurs of the 90s. The circuit uses two types...
The voltage gain of the circuit shown in the figure is 10 times. This gain is given by the ratio...
This circuit was found in a 1980s documentation from the manufacturer of the integrated. The...