| This circuit is intended to give clear warning when it is time to replace the stylus in a record-player car-tridge. The unit indicates the `...
| This circuit is intended to give clear warning when it is time to replace the stylus in a record-player car-tridge. The unit indicates the `...
| There are many different designs for alarm circuits which remind the motor-ist to switch off his lights before leaving the car. The advantag...
| Thanks to present-day low prices for ,nickel-cadmium batteries, it is now an economic proposition to construct a car start booster - an acc...
| A surfeit of circuits has already been published for solid-state car battery voltage monitors. However, no design for a corresponding...
| Most ultrasonic transducers can be operated at input levels up to 50 ... 80 V peak-to-peak. This usually means employing an ultra-sonic osci...
| Although many modern cars are equipped with solid-state regulators to control the voltage and current output of the generator, there are...
| Thefts from cars of valuable accessories such as spotlamps and foglamps are on the increase. Equipped with a spanner, and given a few min...
| It is often the case that the first a motorist knows of a failure in one of his car lights is when his attention is drawn to the fact by...
| In order to expand the memory capacity of microcomputers use is often made of plug-in memory cards. The RAM card described in this artic...
| This final article in the series on the slotless car track discusses the remaining electronic circuits, namely the power supplies for the...