Home Made Circuits and Schematics

The circuit presented here is used to change the tune/melody into a different pitch level by devoid of loss in the tune. The characteristics of the signal might be varied at different moment of time. The melody which is produced by melody generator IC can This simple circuit generates narrow pulses at about 700-800Hz frequency. The pulses, containing harmonics up to the MHz region, can be injected into audio or radio-frequency stages of amplifiers, receivers and the like for testing purposes. A high-pitched The simplified block circuit generator with frequency determined mainly by R1 and C1 (Fig. 1). The signal in point A is approximately triangular with amplitude of about 0.35 V p-p and a supply rail of +9 V. 1. The block diagram shows how three low The high precision G-01X master clock generator adopts new “Adaptive Zero Ground” circuits, and a high precision rubidium oscillator to attain the very best in musical expression from your digital audio system. The unit features a preheat mode This weekend I picked up a very nice Eico 377 Audio Generator. When I first took it home on it became the standard topology for many Audio/IF oscillator circuits. After replacing the power indicator bulb, I turned the unit back on to play around This circuit works just as well at high frequencies as it does at low frequencies. Replace the 470 µF capacitor with a 0.1 µF capacitor, and use an audio detector to sense the voltage waveform at the 555’s output terminal. The detector should produce .

By reverse-engineering the chip from die photos (The sound below illustrates the random pulses produced by the white noise generator.) A sound waveform with attack and decay applied. The schematic below shows the circuit for envelope generation. LM386 audio probe amplifier is an essential tool for troubleshooting audio stages in audio related circuits such as amplifiers the stage with a steady waveform such as from a function generator or sine-wave oscillator. You cannot simply supply it the kit instructions—an LED blinker—I tested this drop-in idea with a small 9-V audio-frequency generator I’d built some time ago for troubleshooting circuits. Controlled via a variable resistor, the generator produces square waves between 5.5 Here is a simple circuit that will produce a musical horn when ever your car is in reverse gear.The circuit uses two ICs for the operation, voltage regulator 7805(IC1) and musical tone generator UM66 Circuit diagram with Parts list. .