| This valve power amplifier is a push-pull design using two EL34s (or their 6CA7 US equivalents). It has been kept fairly simple to avoid pro...
| This valve power amplifier is a push-pull design using two EL34s (or their 6CA7 US equivalents). It has been kept fairly simple to avoid pro...
| The unit is designed as a stand alone disco lighting controller but can be used for driving eight sets of Christmas tree lights, shop displa...
| This circuit can be built into a power bar and used to remotely switch six socket-outlets. It is controlled via an RS232 interface and uses...
| There are certainly strong similarities between these two approaches to controlling equipment, and with the circuit described here we blur a...
| Although our active loudspeaker system was completed with the recently published subwoofer and associated power supply, we have added a litt...
| Thanks to a special integrated circuit from FTDI Chip, computer peripherals with an RS232 interface are easily connected to a USB port. This...
| As opposed to most timer circuits, this month’s Mini Project is intended for very long periods. A switchable divider chain using two 4040 co...
| After our publications covering the 89S8252 Flash Micro Board (December 2001) and the PICee Development System (February 2002) it’s high tim...
| Lighting effects are always popular and we frequently publish such projects in the pages of Elektor Electronics. Here is a circuit that uses...
| This effects switchbox will help make the stage a safer and tidier place. All your effects units can be kept out of harm’s way and seamlessl...