This circuit amplifies signals from 0.5 Hz to 300 kHz. We found it in an old documentation. Equivalent transistors may be used. The gain is 20 dB.
Texas Instruments ESD122 Electrostatic Discharge Diodes (ESD) can be ordered from Mouser...
We find this circuit in a 1980s documentation. The circuit is for SSB modulation and the...
We found this circuit in an old American manual. The formulas allow the gain to be calculated as a...