This circuit is from a documentation on the MC1539 from Motorola and may, however, be implemented with equivalent operations. The transistor also supports equivalent.
This sophisticated remote field strength meter circuit was found in a 73 magazine for radio...
This amplifier for electrometer can work with currents of 0.1 pA in a band of 1 Hz. The circuit is...
This circuit is from an operating manual from the 1990s. The circuit generates sinusoidal and cosine...