This circuit is from an 80's Radio Electronics. The circuit has several output options for 50 mA currents with load indicator through LEDs.
This circuit is from an old manual of operational amplifiers. The setting can be adapted to work...
This six-decade logarithmic current amplifier was found in a 2005 Linear Technology manual. The...
This circuit generates noise pulses for audio equipment probes. The circuit is from a 90’s 303...