This circuit turns off after a time given by capacitor C1. This component can have from 1 to 1,000 uF depending on the desired time. The circuit is from an Electronics Now from June 1995.
Although the TDA1023 integrated circuit is no longer very common in our market, it can be used in...
June 2017 - The new ROHM Low Dropout Voltage Regulators (LDOs) for 3.3 V or 5.0 V high accuracy...
Depending on the key pressed, this oscillator produces a different tone, set in the corresponding...