Misc

Cheap Hearing Aid

Here the cheap hearing aid to help people who have hearing loss. Commercially available assistive hearing devices are quite expensive.…

55 years ago

Remote Control Tester

Here is the remote control tester circuit. This circuit is really a simple and easy tester for verifying the basic…

55 years ago

Low Cost Water Pump Controller

Here the circuit diagram of low cost water pump controller. The automatic pump controller minimizes the need for any manual…

55 years ago

Adjustable Analog Timer

This is a very simple adjustable analog timer circuit diagram. You can build this circuit just for fun, for newbie…

55 years ago

Electronic Motor Starter

The above diagram is the schematic diagram of an electronic motor starter circuit. This motor starter protects singlephase motors against…

55 years ago

Audio/Video to UHF TV Signal Converter (Modulator)

This is the circuit diagram of audio/video modulator. The circuit will convert an audio and video signal into a UHF…

55 years ago

Logarithmic Amplifier LM11C

This is a logarithmic amplifier circuit based on National operational amplifier LM11C. Unusual frequency compensation provides this logarithmic converter a…

55 years ago

120VAC or 240VAC Powered LEDs

You can easily activate the LED from home electrical power line with this circuit diagram. You just need to add…

55 years ago

Arduino UNO

Here the Arduino UNO schematic diagram (click to enlarge): About Arduino UNO: The Arduino Uno is really a microcontroller board…

55 years ago

Telephone Amplifier using LM386

The following diagram is the circuit diagram of telephone amplifier, build based small amplifier IC LM386. This is a easy…

55 years ago