| 103 universal AFC This AFC is suitable for frequencies up 100 MHz and for use in frequency generators, waveform generators and all sorts of...
| 103 universal AFC This AFC is suitable for frequencies up 100 MHz and for use in frequency generators, waveform generators and all sorts of...
| 5 symmetrical harmonic oscillator The remarkable thing about this oscillator is not that it operates on the third overtone of a crystal nor...
| 10 electronic tuning fork A standard tuning fork produces a tone of 440 Hz, that is, the inter- national A (orchestral pitch). It is not ver...
| 11 noise and vibration detector Whether it is the hi-fi next door, the cat purring quietly, or a knock at the door, the detector described h...
| 20 simple baud rate generator The generator described is a good- value-for-money alternative to the commercially available types; it uses on...
| lektor july/august 1983 23 1MHz time base without crystal Clock generators, for instance, those used in microprocessor systems, are normally...
| 36 30 68 60 70 d.c. voltage doubler using a 4049 This simple circuit can produce a d.c. voltage which is approximately twice the supply volt...
| 42 P. von Berg The output of Nl wilt be logic 1 if a signal between 750. 850 Hz is applied to the inputs of the tone decoders. As long as th...
| 9V 9V 1Nl 51 1T3 2 JJ P1 C1 look 10n 14 T C5 "cl 9V op 1C2 cricket simulator 9+ This simulator gives a faithful repro- duction of the chirp...
| elektor july/august 1983 52 pulse/pulse train generator This circuit has two modes of oper- ation. If the pushbutton is just pressed once a...