More about circuit (744)

1-07-1999 | Have you ever needed to power a 12-volt relay in a circuit but only had 6 or 9 volts available? This simple circuit will solve that problem...

1-05-1999 | Digital voltmeters are popular tools for anyone wishing to measure electrical voltages. The circuit described here is, we feel, unique bec...

1-05-1999 | Many hobbyists seem to harbour a desire to control stepper motors from a PC. Unfortunately, complete stepper motor interfaces that can com...

1-05-1999 | Today some aspect of chaos theory is often seen in science magazines and even newspapers. Does it have any relevance to radio and othe...

1-03-1999 | Many experts in the field query the use of sinewave signals to test amplifiers and other audio gear. Although a rectangular signal is i...

1-03-1999 | If a PIC is used for example in a timer application, such as a programmable clock timer, the majority of the circuit is taken up by the us...

1-02-1999 | The service provided by the circuit described in this article is known as a shuttle service (as for instance through the Channel tunne...

1-01-1999 | This twopart article describes an AM/FM/SSB receiver for the frequency range 0.15 – 32 MHz, which is generally (but incorrectly) re...

1-01-1999 | An RF decibel (or power) meter is an indispensable instrument in any radio workshop. Unfortunately, accurate, wideband models are fairly e...

1-01-1999 | The voltage step-up converter described in this article is a transformerless design based on just one integrated circuit and a handful of...