Low-Cost and Simple Intercom

This is a low-cost and simple intercom circuit design. Some intercom circuits is build by applying integrated circuits. The circuit described right here utilizes 3 certainly transistors which easy to find on the electronic store. Even a newbie can assemble it on a piece of veroboard without difficulty. The circuit consists of a 3-stage resistor-capacitor… Read More »

Mic Condenser Amplifier

This is the circuit diagram of mic condenser amplifier. The low-cost and compact mic condenser audio amplifier described right here is deliver good-quality audio of 0.5 watts at 4.5 volts. It could possibly be applied as a part of low-power transmitters, packet radio receivers, intercoms and walkie-talkies.

Telephone Ringtone Generator

This is really a very simple home telephone ring tone generator circuit which is built with applying only several electronic components / parts. It generates simulated telephone ring tone and requires only DC supply with 4.5V DC to 12V DC voltage. One may possibly use this circuit in ordinary intercom or phone-type intercom. The sound… Read More »

Automatic Switching-on Emergency Light

Automatic Switching-on Emergency Light The schematic diagram shown right here is the automatic switching-on emergency light circuit which is controlled using IC. The most important capabilities of this circuit are: automatic switching-on of the light on main power failure and battery charger with overcharge protection. When mains electrical power is absent, relay RL2 is in… Read More »

DC Motor Speed Controller

This is the schematic diagram of DC motor speed controller circuit. The circuit applies two oscillators/timers which are connected as a Pulse Width Modulator (PWM). The timer chip which applied in this circuit will be an nmos dual timer/oscillator NE556. This timer IC has two 555 timers in a single 14-pin IC package.

Multitone Siren Alarm

Here the simple schematic of multitone siren alarm circuit. This multitone siren is effective for reverse horns, burlgar alarms, and many others. It generates five various audio tones and is much more earcatching than a single-tone siren.

Pyroelectric Fire Alarm System

This is definitely an ultra-sensitive fire sensor that exploits the direct piezoelectric property of an ordinary piezo component to recognize the fire. The lead zirconate titanate crystals within the piezo component have the property to deform and produce an electrical potential when heated, thus converting the piezo component into a heat sensor. The circuit mentioned… Read More »

Report: DC/AC Pure Sine Wave Inverter

Here the project report of DC/AC pure sine wave inverter. This report focuses on DC to AC electrical power inverters, which aim to efficiently transform a DC power source to a high voltage AC supply, just like electrical power that would be presented at an electrical wall outlet. Inverters are utilised for a lot of… Read More »

Page 18 of 58« First...10...1617181920...304050...Last »


1w amplifier 10W amplifier 20 watt 100w audio amplifier adjustable power supply Alarm alarm circuit amplifier amplifier circuit amplifier schematic am transmitter circuit audio amplifier audio circuit audio tone control Battery Charger dc power supply dc to ac inverter dc to ac inverter circuit diagram electronic siren emergency light circuit fm transmitter fm transmitter circuit fm transmitter circuit diagram fm transmitter diagram Inverter inverter circuit inverter circuit diagram ldr LED Flasher light sensor lm1875 mosfet amplifier power amplifier power amplifier circuit Power Supply pre amp preamplifier radio circuit regulated power supply rf circuit stepper motor driver tda2005 tone control circuit tone control schematic variable power supply UTC 4558 amplifier circuit diagram, 1500 Watt amplifier cricuit, stk 4141 ampcircuit diagram, 2000 watt mosfet audio amplifier circuit diagram, Audio Amplifire TBA 810s, pwm tip31, electronic circuits radio pdf, fm antena circutes, tda7294 subwoofer amplifier circuit, 12v bass booster circuit diagram pdf, mobile datasheet schematic diagram, gas leakage circuit using 555, lm7805 transistor for mobile charger 12v battery, 300ws amplifier diagram parts and layout, stk car audio ic, circuit explanation flame detector, power amplifier using mosphet diagram, saround circuit, layout power jbl 2000 watt, 200 watts amplifier 8 ohms circuit diagram