help? TF530 resistor network values?

Retrofletch · 26 November 2020, 15:50

I just got around to building up one of these old TF530 PCBs ive had around for a long time and i managed to get past the big hurdle of programming the CPLD's ( yay)

But now i realized that i unfortunatly had the wrong value resistor networks the ones specified are 100k, i had 10K ones, anyone know if its safe to run / test with lower value or if i risk damaging it? unfortunatly i dont have the hardware knowlege to figure this out by looking at the schematic =/

Vypr · 26 November 2020, 17:47

You don't want to use the wrong value of resistors, especially ones an order of magnitude out. best case scenario is that it just won't work. Most likely scenario is that you let the magic smoke out of one or more components.

Retrofletch · 26 November 2020, 20:02

Quote:

Originally Posted by Vypr

You don't want to use the wrong value of resistors, especially ones an order of magnitude out. best case scenario is that it just won't work. Most likely scenario is that you let the magic smoke out of one or more components.

Thank you for response, i will take your advice and wait for replacements to arrive

dalek · 26 November 2020, 20:54

100k are definitely no good. 10k aren't great - you should use 1k: https://www.exxoshost.co.uk/forum/viewtopic.php?t=2204

26 November 2020, 15:50	#1
Retrofletch Registered User Join Date: May 2020 Location: Gothenburg Posts: 2	help? TF530 resistor network values? I just got around to building up one of these old TF530 PCBs ive had around for a long time and i managed to get past the big hurdle of programming the CPLD's ( yay) But now i realized that i unfortunatly had the wrong value resistor networks the ones specified are 100k, i had 10K ones, anyone know if its safe to run / test with lower value or if i risk damaging it? unfortunatly i dont have the hardware knowlege to figure this out by looking at the schematic =/

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26 November 2020, 17:47	#2
Vypr Registered User Join Date: Dec 2016 Location: East Kilbride, Scotland Posts: 451	You don't want to use the wrong value of resistors, especially ones an order of magnitude out. best case scenario is that it just won't work. Most likely scenario is that you let the magic smoke out of one or more components.

26 November 2020, 20:54	#4
dalek Registered User Join Date: Nov 2014 Location: NSW/Australia Posts: 462	100k are definitely no good. 10k aren't great - you should use 1k: https://www.exxoshost.co.uk/forum/viewtopic.php?t=2204

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