Model train controller

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Model train controller

radioman

Senior Transmitter Engineer

Posts: 341
Reputation: 6
Location: Ayr
Ayrshire

#16

01-03-2019, 01:15 PM

(01-03-2019, 11:49 AM)Crackle Wrote: But I am confused by the 2 diodes in the variable resistor circuit. What are these for.

They allow different charge/discharge paths for C5 and therefore alter the mark/space ratio of the output waveform giving the PWM.

Andy

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Messages In This Thread

Model train controller - by Crackle - 24-02-2019, 04:45 PM

RE: Model train controller - by ppppenguin - 24-02-2019, 05:40 PM

RE: Model train controller - by Crackle - 24-02-2019, 07:19 PM

RE: Model train controller - by ppppenguin - 25-02-2019, 12:32 PM

RE: Model train controller - by Refugee - 24-02-2019, 11:12 PM

RE: Model train controller - by Alistair D - 25-02-2019, 12:22 PM

RE: Model train controller - by Refugee - 25-02-2019, 03:19 PM

RE: Model train controller - by Crackle - 25-02-2019, 04:20 PM

RE: Model train controller - by ppppenguin - 25-02-2019, 04:44 PM

RE: Model train controller - by Terry - 25-02-2019, 07:03 PM

RE: Model train controller - by Crackle - 26-02-2019, 07:20 PM

RE: Model train controller - by Refugee - 26-02-2019, 11:13 PM

RE: Model train controller - by Crackle - 27-02-2019, 07:43 AM

RE: Model train controller - by Crackle - 01-03-2019, 11:49 AM

RE: Model train controller - by radioman - 01-03-2019, 01:15 PM

RE: Model train controller - by Refugee - 01-03-2019, 12:09 PM

RE: Model train controller - by Terry - 01-03-2019, 01:35 PM

RE: Model train controller - by Crackle - 01-03-2019, 03:15 PM

RE: Model train controller - by Crackle - 01-03-2019, 05:05 PM

RE: Model train controller - by Terry - 01-03-2019, 09:59 PM

RE: Model train controller - by Terry - 02-03-2019, 10:50 AM

RE: Model train controller - by Crackle - 02-03-2019, 11:26 AM

RE: Model train controller - by Crackle - 10-03-2019, 08:51 PM

RE: Model train controller - by Ed_Dinning - 11-03-2019, 06:18 AM

RE: Model train controller - by Refugee - 11-03-2019, 11:16 AM

RE: Model train controller - by Terry - 11-03-2019, 01:47 PM

RE: Model train controller - by Refugee - 11-03-2019, 02:25 PM

RE: Model train controller - by Crackle - 13-03-2019, 08:20 AM

RE: Model train controller - by Terry - 13-03-2019, 11:10 AM

RE: Model train controller - by Crackle - 13-03-2019, 12:48 PM

RE: Model train controller - by Terry - 13-03-2019, 02:15 PM

RE: Model train controller - by Crackle - 13-03-2019, 07:43 PM

RE: Model train controller - by Crackle - 14-03-2019, 08:24 AM

RE: Model train controller - by Crackle - 17-03-2019, 11:29 AM

RE: Model train controller - by decowoodie - 24-04-2019, 11:12 AM

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