A simple example of a police flasher application. A circuit based on the 5517 generating frequency and the 4017 integrator counting 10 lu at the output frequency. You have seen the same many... Read more
I have previously shared information about relays in the article ” Relay, about the electromagnetic circuit element ” I have added more detail and visuals and information about t... Read more
Previously, ” White LED Lights with Caravan” written in white LED lamp designs that can be used also for interior lighting of the car. The LEDs used in the LED lamp project are e... Read more
Laser Communication Circuit We can provide wireless audio communication with the laser communication circuit described below. In fact, if a parabolic reflector is used, this distance can eas... Read more
During the past year, I replaced a lot of batteries in my home with a lot of batteries, I replaced the batteries with Li-ion batteries, I boosted them. Lantern radios, Led lantern, Hand broo... Read more
Although most passive components are usually fairly easy to test, the proper functioning of a quartz crystal cannot be checked using any standard measuring instrument. A quartz crystal is ac... Read more
Using the BQ24002 from Texas Instruments it is possible to build a simple and small charger module for single lithium-ion (Li-ion) cells. The device is available in a SSOP20 package and so d... Read more
This tester uses a LED to indicate whether an inductive sensor is generating a signal. It can be used to test the inductive sensors used in ABS and EBS systems in cars, with engine camshafts... Read more
With the advent of digital television, it’s often necessary to use a separate receiver. If you have several television sets in your house, you have to buy a digital receiver (and accompanyin... Read more
Some types of electronic equipment do not provide any indication that they are actually on when they are switched on. This situation can occur when the backlight of a display is switched off... Read more
