This simple low power triplicator was found in 90’s American documentation. The diodes can be general purpose types and the frequency is determined by the RC network of the 555.
Found in Popular Electronics from the 90s, this circuit is based on a PLL567 and employs high-end or...
With a 22 V symmetrical power supply this amplifier provides 15 W of output power with excellent...
This digital to analog converter circuit can use any digital switch IC. The circuit is from a July...