| The timer is based on the well- known display driver LM3915, which has a logarithmic scale. This may seem strange, but is not because a s...
| The timer is based on the well- known display driver LM3915, which has a logarithmic scale. This may seem strange, but is not because a s...
| We can make antenna impedance measurements using a variant of the oldfashioned Wheatstone bridge. This article shows the basic form of th...
| This article looks at instruments and methods that can be used by both harn operators and shortwave listeners to get the most out of an an...
| A stable reterence signal is essential whenever you want to adjust a television or a video monitor. Special integrated circuits have been...
| Here is a simple way of making a tape counter that gives a ten-step indication with the aid of two ICs and a seven-segment display. Its g...
| This little circuit is intended tor UHF transverters in combination with a 2-m band transceiver. It is simple to build and much cheaper th...
| The data generator offers a simple means of testing a circuit.There is no need of software for some microprocessor and all the components...
| This circuit provides a simple means of implementing a 'soft-start' on heavy mains loads. Basically, this is achieved with the aid of hig...
| The simple capacitance meter described here is able to measure capacitances between 100 µF and 1µF over five ranges.
| A tester for MIDI connections is a real asset for many constructors. The one presented here is kept fairly simple as shown in the diagram...