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Registered Member #639
Joined: Wed Apr 11 2007, 09:09PM
Location: The Netherlands, Herkenbosch
Posts: 512
The easiest way is by using a limiter to clip the audio signal and feed this signal to the enable pin of the gate driver ic. It would sound about like this quite nice for such a simple circuit.
Registered Member #76
Joined: Thu Feb 09 2006, 10:04AM
Location: Hemer, Germany
Posts: 458
mh, that sounds "horrible" . nevertheless its really simple. but the enable pin of ucc driver ics can provide much more. why not use a 555 to provide fm modulation and then feed this into the enable pin at several hundred khz. the self resonant signal will get interrupted by the high frequency fm modulated signal from the 555.
Registered Member #789
Joined: Sun May 20 2007, 09:32AM
Location:
Posts: 21
perhops with gate-ICs like 4093(also schmitt-trigger) or 4007. i built a single transistor audiomod test coil with a cd4093, a ne555 fm schematic, and 2-transistors as gatedriver. as oszillator i used a cd4046 or u use a feedback schematic
Registered Member #789
Joined: Sun May 20 2007, 09:32AM
Location:
Posts: 21
Lomy wrote ...
perhops with gate-ICs like 4093(also schmitt-trigger) or 4007. i built a single transistor audiomod test coil with a cd4093, a ne555 fm schematic, and 2-transistors as gatedriver. as oszillator i used a cd4046 or u use a feedback schematic
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antena feedback 74HC14 modulation
