This high frequency or RF amplifier was found in a 90s Popular Electronics. The circuit can be redesigned to operate in different frequency ranges.
This amplifier for sound equipment was found in the Philips Databook of 1990. The circuit can be...
From an old manual of unijunction transistors, this oscillator generates different tones when the...
This amplifier was obtained from the CA3140 datasheet, an operational amplifier with JFET at the...