This variable notch filter circuit for enabling an adjustable audio frequency cancellation as desired by a specific application. A Notch Filter can also be named as Band Stop filter or […]
Simple Preamplifier Circuit
The circuit discussed is created to work like an universal preamplifier, by adjusting the value of one element, R1, you are able to look after the entire range of inputs […]
Sound Operated Switch Circuit
Sound triggered switches are employed in several applications, a few common illustrations being voice controlled tape recorders, baby alarms, burglar alarm systems, and VOX (voice managed switching) techniques of radio […]
Audio Limiter Circuit
When generating tape recordings, particularly of “live” shows, it may be quite tough to set the right recording level. This could effortlessly result in an extreme recording level and major […]
FET Voltmeter Circuit
Eventhough a common multimeter is appropriate for almost all DC voltage measurement it may at times demonstrate to be insufficient. This can be the situation when designing measurements on higher […]
Automatic Central Heating Controller Circuit
Manually controlling the boiler thermostat of your central heating system according to the season will require the boiler to be turned on and off too many times, especially during the […]