This circuit was found in an Elektor from the 90s. The circuit uses common components even today, requiring a symmetrical power supply.
This oscillator can generate signals up to a few megahertz depending on the crystal used. Actually...
Found in an Elektor from the 90s, this circuit triggers a Sonalert-type buzzer when the sensor is...
This amplifier is from Motorola's 1990 Linear Databook. The circuit can be used with operating...