Simple Miniature FM Transmitter
I found this FM transmitter circuit on the internet, it works very well and it is very simple to build, even for amateurs. I managed to squeeze all the parts on small 1.5 x 2 cm PCB. When using small wire antenna and 3V power the range is 50m. The coil has 10 turns on a 3 mm diameter and is wound with 0.3 mm copper wire. The microphone is an electret type. Transmitting frequency is changed by stretching or compressing the coil. Furthermore, we can change the frequency by changing C2…
Retro LED - VU Meter
We present a special Volume Unit Meter circuit, which resembles a retro electromechanical meter device. You may place it at the front panel of your power amplifier. The specific VU meter uses a logarithmic scale of 3 dB/step, and gives a real view of the output power of the amplifier. It can be powered from a voltage between 10 and 13V, and can be connected to any amplifier having an output power between 1 and 200W. The VU meter is made from 20 rectangular LEDs. The LEDs are placed in a…
Vector de stock (libre de regalías) sobre Ohms Law176962991
Descubra Ohms Law imágenes de stock en HD y millones de otras fotos, ilustraciones y vectores en stock libres de regalías en la colección de Shutterstock. Se agregan miles de imágenes nuevas de alta calidad todos los días.
HOW TO MAKE REMOTE SWITCH PART 2
HOW TO MAKE REMOTE SWITCH PART 2In this video I have made a remote relay switch which can be used to control lights or any home appliance( wireless )with an ...
Top 5 useful projects, super easy useful UA741 ic diy projects
Top 5 useful projects, super easy top5 useful UA741 ic diy projectsToday i will show you how to make top 5 useful projects, super easy top5 diy useful projec...
Garden Solar Light Supercapacitor Downgrade
Sponsored by JLCPCB ($2 for 10 Boards): https://jlcpcb.comMake a garden solar light worse by replacing the battery with a supercapacitor.
LM317 Audio Amplifier
You probably know that LM317 IC is used as an adjustable voltage regulator, but did you know it can be used as an audio amplifier? This is a class A audio
Easy Joule Thief Soldering Project
Easy Joule Thief Soldering Project: The Joule Thief is a clever little circuit that can light a LED with a battery that is nearly dead. It does this with a pair of opposing magnetic fields. I like this circuit because it is simple to build, yet demonstrates some very complex electrica…
Simplest Automatic Night Light Circuit.
New inventions in Electrical, Electronics, Machines and many more in Hindi and English language.Technology, Creative and Technical consultant channel, you ...
Reuse Old Laptop Webcam
Reuse Old Laptop Webcam: I had an old, not working laptop, and I wanted to reuse as much parts as possible. So I came to the idea to try to use the webcam.This instructable is only possible with a webcam connected via a usb connection. The laptop I had was an Acer Aspire 75…
Simple ESR Meter Circuit | Homemade Circuit Projects
The post discusses a simple ESR meter circuit which can be used for identifying bad capacitors in an electronic circuit without removing them practically from the circuit board. The idea […]
IR transmitter and receiver circuits
This article shows the IR transmitter and IR receiver circuits,working.Here the transmitter circuit is designed using 555timer.TSOP1738 is used as receiver