60-120 SECONDS DIGITAL VOICE RECORDING CIRCUIT Schematic Circuit Diagram

The position of the materials is indicated on the print. ( see circuit diagram ) ISD1760 (60sec), ISD1790 (90sec), ISD17120 (120sn) 1N 4007 7805 3 pcs led bulbs 1 pcs capacitive microphone 3 pcs 1K 1Part 82K 3 pcs 4.7K 2Pcs 10K 7Pack 100nF 2Pcs 4,7mF 1Pcs: 470mF Record sw push-and-drop switch 4pcs push button aux in one pcs[…]

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Squarewave Oscillator Using TLC073 Schematic Circuit Diagram

The new range of low-noise, highspeed, and low-distortion BiMOS opamps from Texas Instruments, type TLC070 to TLC075, is intended for use in instrumentation, audio, and automotive applications. This oscillator is an ideal example of its application: a stable, highly accurate squarewave at frequencies up to 60 kHz can be produced with an output current of[…]

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