Mixer Schematic

This circuit generates sine and square wave signals with frequencies ranging from below 20 Hz to above 20 kHz. The advantage of this circuit diagram is that the output frequency can be adjusted by varying the variable resistor R6. The...

This simple circuit tests speakers, microphones, transformers, and voltage. It is essentially a very low-frequency oscillator that produces extremely short "fruity" pulses. The sound produced is easy to hear and allows for precise determination of its direction, making it...

This precise one-pulse-per-second clock is constructed using a few common components and is powered by a 50 or 60 Hertz mains supply without any direct connection to it. A beep or metronome-like click, along with a visible flash, indicates...

Is the battery empty, or is there something wrong with the device? This question often arises when troubleshooting a battery-powered device, such as a Walkman. When diagnosing issues with battery-powered devices, it is essential to systematically evaluate both the battery...

Utilizes two distinct common-cathode video mixers. Identical heading markers are inserted into the front input 2 of both mixers, while the other inputs manage independent markers. The circuit employs two common-cathode video mixers, which are integral components for combining multiple...

The following circuit illustrates a schematic diagram of an LED sequencer. This circuit is based on the 555 timer integrated circuit (IC). Features include a 555 timer circuit designed to debounce a mechanical switch, a 555 timer circuit to...