Signal Generation

Thread Starter

csr1981

Joined Aug 25, 2010
5
I want to generate the signals as attached in the image.
The frequency of these signals should be variable.

Can anybody help me with this
 

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Papabravo

Joined Feb 24, 2006
21,228
  1. A processor can generate these signals
  2. An FSM in an FPGA can also generate these waveforms from a higher frequency clock.
 

Wendy

Joined Mar 24, 2008
23,429
A VCO might be able to do it too.

What is the timing of the pulses? Or if it is that variable, how about duty cycles?
 

SgtWookie

Joined Jul 17, 2007
22,230
Looks to me like the 2st waveform is a cam timing signal from a 6-cylinder engine. The "odd man out" pulse is the TDC signal, but it's sent ahead of time where the actual TDC occurs.

Not absolutely sure what the 2nd waveform is, but it's 58 clocks, then 2 missing clocks.

I guess our OP wants to build a test set for an ignition system.

What's not readily apparent is the timing relationship of the 1st waveform to the 2nd waveform.

Anyway, I think using a 4017 Johnson counter as a /6 gating a clock could be a good start on it.
 
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