This circuit, suggested by an Electronics World of 1969, keeps a blinking LED for a while when a power outage occurs. Time depends on capacitor C1.
September 2017 - Semtech's proximity sensors SX9310 with Specific Absorption Rate (SAR) can be...
This circuit uses two sensors that are placed at the intersection of a miniature railroad, causing the LED...
This is a traditional complementary-output transistor amplifier sourcing 2 to 4 watts to a 4 ohm...