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 configuration triggers an external circuit or simply an LED for time given by R1 and C1 (T =...
This circuit provides a linear attenuation of a signal up to 100 dB. The circuit operates with...
This oscillator with operational and CMOS buffers generates complementary signals. The circuit is...