Found in the 1989 Radio Electronics Experimenter special edition, this circuit was designed for assembly with SMD components. The printed circuit board was provided.
This modulated siren has frequency adjustment and modulation in the trimpots. For 220V use 1N4007 as...
This High Side sensor with the L1637 was obtained from a Linear Technology 2005 own manual that...
This circuit is from a Popular Electronics from the 90s. Its gain is 22 dB and can be used as a...