2020年3月25日 · This HP 6632A is dated from mid 90s and is in reasonable condition. RIFA and electrolytic caps look good, nevertheless, all these will be recapped to keep this unit healthy for next 25 years. Fan and Heatsink had some dust build up, but nothing to worry about - after cleaning everything looks like new.

2012年6月23日 · Re: HP 6632A 20V 5Amps Programmable PSU « Reply #6 on: June 23, 2012, 10:03:34 pm » Btw: The excelfiles above , shows the inaccuracy max 4mv , when setting the voltage. rom 0..20v That is NOT ripple /Bingo

2013年6月11日 · In my newbieness I'm putting together a lab and got a HP 6632A powersupply/load from fleabay a while back. As others have noted the fans are loud. So I replaced it with THIS temperature controlled fan for $10 on newegg. Quiet now! Even when drawing full power the fan is barely audible.

2013年9月30日 · Hi The HP 6632A is designed to be a two quadrant power supply. It has a positive output voltage, but it has the ability to source current (normal power supply behaviour) and sink current (unusual). The negative current limit is …

2017年6月27日 · I have an HP 6632A DC Power Supply. I'd like to use it to cycle Lithium Ion Batteries. Setting the positive current limit is a piece of cake. However, when I try to use the unit in current sinking mode, I always get this stinking offset of ~ -250 mA. I know, that's what the manual says the offset is in current sinking mode.

2017年1月5日 · Recently I picked up an HP 6632A quite cheaply, under $75 shipped. The thing works great with the slight exception of the fan being loud. (see 1st image) Being as I plan on using this on my desk, I wanted to quiet it down but I don't want to have it over heat from throwing some low power low noise fan in that barely moves 12 CFM. After some ...

2016年7月31日 · Re: HP 6632A blowing fuses and shorted caps « Reply #8 on: August 02, 2016, 09:00:27 pm » Did some desoldering, C101 was shorted and had leaked out (moneyshots below).

HP 6632A 20V 5A 100W - $350 I replaced all the Rifa caps, added nice Hirschmann (made in Germany) terminals on the front, added a switch to connect the sense terminals to the front connectors and added temperature control to the fan for …

2014年6月27日 · Re: On US ebay: HP 6632A power supply, $75 « Reply #19 on: July 01, 2014, 11:53:15 am » You will probably want to get a box of Phillips flat head screws that are at least double the length of the current frame screws.

2021年12月5日 · Also, the part number for the original HP binding posts for this would be great. hp_6652a_front_panel_pre-drilled_holes.jpg (2099.37 kB, 4032x3024 - viewed 108 times.) hp_6652a_front_panel_backing_plate.jpg (2124.96 kB, 4032x3024 - viewed 91 times.)