Found in a 1968 Novel Electronics Circuit, this circuit compares two light intensities using common LDRs as sensors. Transistors can be modern PNP equivalents.
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...