Found in a RE Experimenter Handbook from the 90s, this circuit is intended for the use of LEDs in a flashing system for Christmas trees. The circuit can be expanded
This low-noise, low-drift amplifier was found in a 90's EDN. It can be implemented with modern...
This circuit may be modulated by a very low frequency signal, for example to obtain the vibrato...
This circuit is from a 90s Popular Electronics. It consists of a power source for bass amplifiers...