RANGKAIAN INTERCOM

Sirkuit ini menggunakan transistor tunggal dan amplifier LM386 IC untuk menghasilkan interkom yang memungkinkan pengoperasian h...

Doorphone Intercom

Description: A simple Intercom made with a single transistor and low power audio amplifier LM386. The circui uses 8 ohm speakers, which ...

Quiz Circuit

  Notes: This design uses four IC's and has four input circuits and four independent outputs and a single master reset switch. The...

Simple Intercom

   Simple Intercom with IC = LM390

Intercom

A diagram of the modified mini amplifier as a two-way voice communication. Very easy to assemble and fun.

Cheap Pump Controller

This simple but effective circuit can be used to control water level in a container. The prototype is used to pump water out of a bucket tha...

Full-duplex Intercom

Comments: This design allows to operate two intercom stations leaving the operator free of using his/her hands in some other occupation, thu...

Capacitive Sensor

  Circuit description: The purpose of this circuit is to animate shop-windows by means of a capacitive sensor placed behind a post-card-lik...

Automatic water pump controller

Automatic water pump controller merupakan rangkaian berfungsi untuk mengontrol pompa air secara otamatis pada suatu reservoir atau penampung...

Simple STUN GUN Circuit with IC 555

This circuit produces a very high voltage and care must be used to prevent getting a nasty shock.  The transformer can produce over 1,00...

Ultra Bright LED Lamp

Ultra Light Led is the future. The Ultra Bright LEDs works at a voltage between 3 and 3.6 V and current between 10 and 30mA. This circui...

Automatic LED Emergency Light - Modified Version

As there is serious discussions going on about our previous Automatic LED Emergency Light Circuit using LM 317 , Mr.Seetharaman has come up ...

Automatic LED Emergency Light

LED Emergency Light We have developed three circuits under Automatic LED Emergency Light. Two of them are designed by Mr. Seetharaman , a v...

Mains Operated LED Circuit

This is a modified version of the circuit Super bright LED Night Light published here. This circuit is submitted by Mr. Seetharaman and its...

Super bright LED night light

Description. Here is the circuit diagram of a super bright LED night lamp that can be operated from the mains supply. Bridge D1 is used to...

Mains operated LED lamp

Description. This is a very simple and cost effective mains operated LED lamp which gives a very bright white light.Since no transformer...

Automatic - Low Cost Emergency Light Electronic

Description Here is a white-LED-based emergency ablaze that offers the afterward advantages : 1. It is awful ablaze due to the use of whi...

18 LED dimmable LED lamp

Introduction This circuit is a dimmable white LED lamp array with 18 LEDs. The lamp brightness is regulated as long as the input voltage...

500W Low Cost 12V to 220V Inverter

Attention: This Circuit is using high voltage that is lethal. Please take appropriate precautions Using this circuit you can convert the ...

Telephone call Voice Changer

Voice manipulation device specially intended for props, 9V Battery operation Although this kind of voice effect can be obtained by means ...