Originally indicated as an alarm alert in a 1990s US publication, this circuit can be used as a shield to control a strobe lamp. The sensor is a optocoupler with LDR.
This constant current charger from 1997 Linear Technology Applications uses common components at...
This circuit produces a single pulse whose duration depends on the capacitor. The circuit is from an...
Found in an old American documentation, this circuit uses neon lamps as a reference to obtain a...