AM radios are relatively simple devices ... testing two popular 555 transmitter circuits. One uses the control voltage pin to input the audio signal, while the other uses the reset pin.

The transmitter is huge but has comparatively few parts. You needed a crystal for the frequency you wanted to talk. There were two little modules that were precursors to hybrid circuits (which ...

As with many inventions, two people had the idea for an integrated circuit at almost the same time. Transistors had become commonplace in everything from radios to phones to computers, and now ...

Supplier: Shanghai Yuanben Magnetoelectric Tech. Co., Ltd. Description: The tank level alarm with a bright flashing LED and a loud beeper The tank alarm grabs attention with a bright flashing LED and ...

A lament about the demise of AM radio has been rising in the halls of Congress. Several automakers, most notably Tesla and Ford, have decided to stop putting AM radios in their electric vehicles.

If you have people on your gift list who are either adult engine tinkerers or younger budding gearheads, a good gift to consider is an engine kit from EngineDIY ... with one customer experiencing a ...

If you’re having trouble with any services and you think something might be wrong with our network select the service you are having problems with. Then enter your address details and the tool ...

An emergency kit — sometimes called a survival kit — can help you be more prepared. Nearly half of Americans (48%) have already assembled some kind of emergency supplies, according to FEMA’s ...

Life Kit is here to help you get it together. Want another life hack? Try Life Kit+. You'll support the show and unlock exclusive curated playlists and sponsor-free listening. Learn more at plus ...

Adding more batteries to a simple circuit will increase the electrical energy, which will make a bulb brighter. Electricity can flow through the components in a complete electrical circuit.

Or perhaps the ice cube; this set of tournaments has earned its moniker as the “cocktail circuit” for a reason. A high-profile mid-am might start his year at the “Coleman,” the shorthand ...