This circuit uses a JFET at the input to increase the impedance. The circuit has a gain voltage gain of about 100 and bandwidth is 20 kHz. The JFET can be the MPF102 and the bipolar transistor can be replaced by modern types.
This circuit uses a JFET at the input to increase the impedance. The circuit has a gain voltage gain of about 100 and bandwidth is 20 kHz. The JFET can be the MPF102 and the bipolar transistor can be replaced by modern types.
