Sound Circuits: Audio IC Electronics and IC Audio Chips

This kit uses the TDA2009 class AB audio amplifier IC for high quality stereo applications.

1 Watt Audio Amplifier. 8 Ohms impedance. 20 Hz to 20 kHz. Small, few components.

Schematic for an electronic audio level VU meter that uses LED's to display the volume/audio levels.

This simple stereo audio amplifier will amplify audio for your low-medium impedance headphones and give you left/right balance control

This is a complete AM radio for the standard broadcast band, most of which is on a single IC. Other components, such as coils and variable capacitor to make a finished radio are included. The IC is the RF Amp, detector and AGC circuitry. The IC's output d

This audio amplifier electronic circuit uses MOSFET transistors to create more than 25 Watts output power. Uses IRF530 and IRF9530 MOSFET transistors.

Describes the schematic (circuit diagram) and PCB (Printed Circuit Board) for a cheap 100-150 Watt audio amplifier with few components.

Shows an electronic circuit diagram (schematic) for a simple 10 Watt audio amplifier, using only 4 transistors.

Variable gain audio amplifier capable of powering a small speaker for personal use

Features a telephone ring generators, phone line in-use indicators and an audio interface circuit.

This is a very eye appealing audio accessory. Displays an approximate output level for each channel of a stereo amplifier. Connects to the speaker terminal; levels are displayed in ten steps. User may select either a moving dot bar appearance. Uses two LM

18 Watt Mono Audio Amplifier. Possible to use two for Stereo sound.

High quality 25 watt audio amplifier. Combining 2 would give a 50 watt stereo amplifier.

A Mono audio amplifier which produces a very good 7 watts output power.

2 watts of power across to channels is what this kit delivers. Great quality.

Data sheet for the 7805 (LM7805), a compact IC 5v DC voltage regulator integrated circuit. This page further describes the 7805 and provides Datasheets for the IC device.

Introduces the Optocoupler-triac MOC3010. Complete electrical isolation between input audio signal (low voltage circuit) and output light modulation. Operates from 100 VAC line. Audio input via 3.5mm jack.

Flashes five very bright LED's in any one of seven, user-selectable, patterns. A COB (chip-on-board) IC makes assembly very easy; the chip is supplied premounted on its own board and a motherboard contains the entire circuit. Operates on 3 volts DC, batte

This temperature meter uses a Harris 7106 IC as the heart of a low cost, accurate temperature meter. LCD 3-1/2 digit readout. All of the active circuits are in this one, versatile chip. In addition to temperature functions, the board includes an area for

A very low cost and simple electronic circuit to generate square, pseudo-sinewave and triangular waveforms in the Audio frequency range. Uses a quad opamp LM348. Good educational kit.

A bit different from other kits. We supply the three basic components for you to make your own movement detector. Included is a PCB mounted fresnel lens, a PIR movement sensor and the latest movement IC just released. Eight pages of application notes show