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.
This preamplifier is recommended by Sanyo and is based on its LA3160 integrated circuit. The...
This circuit is from an American 80's documentation. The transistor is general purpose,...
This circuit is from an old Mullard (Philips) documentation on the 555. The circuit uses a pair of...