Elektor Team (9538)

1-07-1986 | from an idea by A Buhlmeier 66 noise gate and two regulator sections are re- quired. For a double mono version, two control sections and two...

1-07-1986 | Here is a circuit that enables you to leave a boring meeting at any time you like. When you have had quite enough of the exasperating, seem-...

1-07-1986 | EE July/August 1986 68 Despite the many laudable qualities of the BBC microcomputer as to speed and ease of peripheral inter- facing, many u...

1-07-1986 | 69halogen lamp protector Halogen lamps are, unfortunately, rather prone to burn out when they are switched on, and this is mainly owing to t...

1-07-1986 | simple NiCd charger 1701 Dry batteries have one major disad- vantage: they go flat. Rechargeable types, such as NiCd cells, also suffer from...

1-07-1986 | by P Sicherman two-tone chime EE 92 July/August 1986 171 This electronic chime is easily built from commonly available, inexpen- sive parts....

1-07-1986 | 72 This circuit offers impeccable monochrome images when driven by the digital RGB and sync signals of a high-resolution graphics card such...

1-07-1986 | The use of external mains voltage adaptors for cassette recorders, port- able radios, home computers, pocket calculators, and so on, is comm...

1-07-1986 | EE 94 July/August 1986 74 The electronic version of the well- known coin to toss up prior to com- mencing a footbal match-or any other sport...

1-07-1986 | B Vogel 75tuning AF power stages Simple, economically priced audio output stages, such as, for instance, those using the hybrid ICs in the S...