| Of necessity, today’s (surround) amplifiers have to come with lots of inputs and outputs. However, a problem occurs if you want to use sever...
| Of necessity, today’s (surround) amplifiers have to come with lots of inputs and outputs. However, a problem occurs if you want to use sever...
| This circuit is a switch for electric motors, which can be operated by a R/C model remote control unit. The electronics are very simple, and...
| Various electronics mail order outlets are currently advertising simple and relatively cheap wireless control system for use in and around...
| Simple triangle-wave generators have a weakness in that the waveform of their output signal normally cannot be modified. The circuit pre...
| When it comes to input selection in a preamplifier, the use of a relay is always better than a simple rotary switch - at least from a qua...
| Infra-red remotely controlled equipment is provided with a standby mode in which it remains ready to operate at a simple command of a...
| Overcharging of batteries is prevented by the timely switching off of the charger. A timer that can be set to within a minute can be bui...
| Designing decadic voltage dividers is not as simple as it may seem. One decade is not too difficult, but when a number of decade steps are...
| electronic aerial switch Many radio- and TV-amateurs have often wished they had a simple means of switching from one aerial to another. The...