Burkhard Kainka (226)

1-10-2000 | Loss-free switching, using a Field Effect Transistor (FET) and a capacitor‘s discharge function, is the base theme of this elementary circui...

1-09-2000 | At one time or another many readers may have thought about controlling or monitoring equipment using their PC. Electronics projects using a...

1-09-2000 | Everybody is talking about the USB. In the long term, this new serial interface could replace many of the PC interfaces that have been used...

1-09-2000 | The USB Interface described elsewhere in this issue demonstrates that the USB may be used for DIY projects related to measurement and contro...

1-07-2000 | In order to listen to your heartbeat you would normally use a listening tube or stethoscope. This circuit uses a piezo sounder from a musica...

1-07-2000 | Using a Power-FET it is possible to build a very simple touch dimmer for low voltage lamps. Two drawing pins are used here as the touch cont...

1-07-2000 | Here is a simple circuit for a one transistor Audion type radio powered by a 1.5 V battery. It employs a set of standard lowimpedance headph...

1-07-2000 | Any stepper motor can be used as a generator. In contrast to other generators, a stepper motor produces a large induced voltage even at low...

1-07-2000 | Often you find yourself in the position of needing to wind your own coil for a project, or maybe you come across an unmarked coil in the jun...

1-07-2000 | If you ever look at construction notes for building old detector type radios the type of headphones specified always have an impedance of 2...