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Missing Zeners
Moderators: adafruit_support_bill, adafruit

Missing Zeners

by roundhill4 on Thu May 26, 2011 12:23 am

Sooo.... excited 7 year old unpacked the miniPOV kit prior to designated assembly hour and location. Result: missing 4.7K resistors and Zeners. I managed to scrounge up some 4.7 K resistors (that are 10% tolerance, so they meter out as 5.0K resistors), and need to pick up the zeners. I see Radio Shack sells 5.1V Zeners. Will these work, or do I really need the 5.6V zeners. Also, will the 300 ohm difference in the resistors make a difference?

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Joined: Thu May 26, 2011 12:19 am

Re: Missing Zeners

by adafruit_support_bill on Thu May 26, 2011 5:53 am

Those components should work fine. You will not notice any difference in the LED output from the slightly higher resistance. And the 5.1v zeners should still clamp the RS232 voltages at valid TTL levels.

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Joined: Sat Feb 07, 2009 10:11 am