If you are an electronics hobbyist then you must have heard about the 555 timer IC and its 3 popular circuits viz. astable multivibrator, bistable multivibrator, and monostable multivibrator. Apart ...

The DIY Electronic Siren circuit described here can create three different US-style siren sounds: DIY police, DIY ambulance and fire engine. The desired sound can be selected using switch S1. The ...

When it comes to designing timer circuits, the very first thing which comes to mind is the 555 timer IC. It’s the oldest piece of tech and thus you can rely on it blindly and best of all, it’s ...

Zetex Semiconductors have a siren driver IC Type ZSD100 available that is suitable for use in alarm systems for cars and model craft. With the addition of only a few components as shown in the diagram ...

8253 1 is used to generate proper usable clock signal and to trigger uP after 1 hr. 8253 2 is used to run alarm for 30 sec. CTR0 and CTR1 of 8253-1 IC are setup in mode3 and CTR2 in mode 2 CTR0 of ...

Join us for Elektor Lab Talk on August 18, 2022, at 18:00 CEST on YouTube. Mathias Claussen (Senior Engineer, Elektor) and Jens Nickel (Editor in Chief, Elektor) will talk about Elektor Summer ...