Broadband Amplifier (CB21859E)

This circuit has a voltage gain of 30 times and passband of 14 MHz. The circuit is from the 1974 Ferranti transistor manual.

Comparator with Hysteresis LM339 (CB19791E)
This circuit, already explored on this site, can be applied to other comparators in the same...
MOSFET VHF Amplifier (CB4688E)
This MOSFET amplifier operating in the VHF range was found in an old American telecommunications...
Debouncer (CB9277E)
This circuit was found in a 1967 American documentation. The switching diode (tunnel) used is an...