Found in a 1965 Electronic Design, this circuit limits surges in a load when power is applied. The diodes and SCR must be according to the load.
The Texas Instruments TPS80 LDO (Low Dropout) series (www.ti.com) can provide fixed or adjustable output...
Found in Radio Electronics from the 90s, this siren finds many variations on this site. The...
The frequency of this circuit, that makes use of a tunnel diode as an active element, depends on...