SAA1057 test pin help??

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pjeva
no manz can test innit
no manz can test innit
Posts: 238
Joined: Tue Aug 26, 2014 9:59 pm

Post by pjeva » Thu Apr 09, 2015 9:33 am

I didn't modify the code. Just downloaded hex file from pira.cz
Use the capacitor on test pin. It acts as pwm so you need to filter it. If you have delay, it is ok. Delay could be few of seconds, so it doesn't matter. Your vco will be locked when led lites up. Use 10uF elco. This delay is usefull if you need to turn on / off your rig on lock / unlock. Something like OLPD function on those oversized boards...
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Mike Volume
who u callin ne guy bruv
who u callin ne guy bruv
Posts: 23
Joined: Sat Sep 06, 2014 10:52 pm

Re:

Post by Mike Volume » Mon Apr 13, 2015 5:37 pm

pjeva wrote: those oversized boards...
Wonder if they are the ones with loads of chips and 0R resistors?
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