$29.99 Buy It Now or Best Offer
free,30-Day Returns
Seller Store bsg*electronics
(705) 100.0%,
Location: Ashland, Massachusetts
Ships to: US,
Item: 166529806268
Restocking Fee:No
Return shipping will be paid by:Buyer
All returns accepted:Returns Accepted
Item must be returned within:30 Days
Refund will be given as:Money Back
Vintage:Yes
This is a blank PCB only for building a Manual Prom Programmer for 82s123, 82s23, 74s288, and 74s188 chips. This programmer is designed to be powered from a PC power supply or arcade power supply with 12v and 5v lines. Assembly requires soldering and basic electronics experience. This sale is for the Board ONLY! You will need to purchase all other components separately. See the link below for a video, more pictures, and complete parts list below for a list of components that you can buy at Digikey, Ebay, and others. https://bsgelectronics.com/a-manual-programmer-for-82s123-and-82s23-prom-chips Feel free to send a message with any questions about this board, assembly, or use. NOTE – Please notice the orientation of the blue buttons when assembling this board. Programmer will not function correctly if buttons are installed backwards. NOTE #2 – PROM chips are one time write only. After building this board, it is advisable to test on an already written, “scratch”, chip so you don’t have to waste a new 82s123. *UPDATE* Version 1.5 corrects minor error and adds support for 74s288 and 74s188 chips. Note – To add support for these chips on v1.4 boards, change R7 from 4.7K to 1.3K and R11 from 91K to 82K. This will lower the VCC voltage from 10v to 9.2v and shorten the pulse time from 1 sec to .3 sec which works well with both 82s123/23 and 74s288/188.
Frequently Asked Questions About PCB for DIY PROM Programmer 82s123 82s23 74s288 74s188 Board ONLY version 1.5 in My Website
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