Would you wish to have a smart tweezer that allows you to test out the volt or ohm of the electronics components? Honestly, the smart tweezer is also known as digital multimeter or DMM generally.
A sweet tweezer can be a very useful device, especially for basic faultfinding and field service work or a bench instrument. [...]
Guys, is it possible to develop a current regulated LED tester, which is only the size of a small matches box? Well, it might sounds like the story in “1001 Arabian Nights”, but nothing is impossible, especially in this quirky 21st century! DanZen from instructables made this real.
Well, for those who assumed that all LEDs [...]
Since the creation of the first battery in 1800 by Alessandro Volta, the battery has become a very common power source. According to the latest survey, the battery industry worth more than multibillion dollar and the statistic keeps climbing day after day.
Besides of the Nickel-cadmium batteries, the Lithium-ion batteries are the most familiar types of [...]
Do you have the desire to change any audio signal, and transform it into an amazing visual display? This also a simple device, you just plug it into the wall, then insert the ¼” jack, turn it on, and enjoy the pleasure moment.
If you do, then this will keep you busy for a while.
The material [...]
For most of the small aircraft aviator, they might have the difficulty in the landing radio altimeter (the standard 4.3 GHz radio-altimeter). Therefore, the new design will improve the recently accuracy and altitude coordination.
As we know, most of the current made radio-altimeter only limited to a few feet, and this will increase the frequency of [...]
This circuit was a winner in Electronics Today International in 1987. Solid state oscilloscope is really simple and small size. Even it can be powered from tested circuit. Actually it has low frequency range (up to 500Hz) and low resolution (100LED matrix display).
Despite its poor parameters, circuit can be fun to experiment with cheap [...]
This is a broad band field sensing probe that has about 15cm length antenna. It is capable to detect radio energy and drive millivolt level signals to the input of digital volt meter.
This circuit was used to test 4MHz, 35 MHz, 55 MHz, 100 MHz, 384 MHz, 900 MHz, a cell phone, and a microwave [...]
