More about oscillator (542)

1-07-1986 | EE July/August 1986 34 We all sometimes wish that some of the switches around the home were just a little easier to locate and operate, nota...

1-07-1986 | Alan G Hobbs 18telephone-bell simulator This circuit is intended for use in a small private telephone installation. The ringing tone sequenc...

1-07-1986 | +12V p" 0 10n 12V 8OrnA max This timer automatically switches off equipment left operating unattended for more than about thirty minutes. Th...

1-07-1986 | EE July/August 1986 "Alea iacta est" (the die is cast, freely) someone said quite a few years ago, and promptly engaged in sundry military a...

1-07-1986 | Musical instruments are tuned with the aid of a signal source that generates a signal at a frequency of 440 kHz. An electronic tuning fork i...

1-07-1986 | 59HCMOS VCO Crafty designers are forever trying to use ICs for applications they were never intended for. In this circuit a member of the ne...

1-07-1986 | 59HCMOS VCO Crafty designers are forever trying to use ICs for applications they were never intended for. In this circuit a member of the ne...

1-07-1986 | The purpose of this one-chip circuit is to give an audible alarm in case a thief attempts to steal the car radio, which is generally conside...

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....

1-01-1986 | by Peter Theunissen Fig. 1 Relative frequency drift as a function of temperature for a typical AT cut crystal. Fig. 2 Block schematic of the...