A not too expensive DC Power Supply - Page 1
Forum section: electronics / beginners

author: bsnbipen
author_rank: Newbie
timestamp: May 07, 2024, 03:27:00 pm
content: Hello,I am looking for a Bipolar 100V-1AMP Power Supply that is not that expensive (Under 500$). I saw a couple of options but I don't know their reliability I am connecting this to an AMP.

author: IanB
author_rank: Super Contributor
timestamp: May 07, 2024, 04:43:53 pm
content: Is this to power a vacuum tube audio amplifier?Is it for diagnostic work on a test bench, or is it for normal operation? If for normal operation, the power supply would usually be integrated inside the amplifier.If for diagnostic work on a test bench, it would normally need to be variable from 0 V upwards, and should also typically have a current limit.

author: aliarifat794
author_rank: Regular Contributor
timestamp: May 08, 2024, 08:00:33 am
content: You can explore the Tecpower power supply collectionshttps://kaito.us/collections/dc-power-supply

author: bsnbipen
author_rank: Newbie
timestamp: May 08, 2024, 06:30:30 pm
content: It is for an OP AMP.

author: tooki
author_rank: Super Contributor
timestamp: May 08, 2024, 07:59:28 pm
content: Quote from: bsnbipen on May 08, 2024, 06:30:30 pmYou’re gonna need to be a lot more specific and detailed. Don’t waste people’s time with questions so vague they can’t be answered.

author: bsnbipen
author_rank: Newbie
timestamp: May 08, 2024, 08:24:35 pm
content: Sorry, for that but I am a newbie here. I am just looking for a DC power source for an OP AMP. I have added its specs here.

author: IanB
author_rank: Super Contributor
timestamp: May 08, 2024, 08:43:19 pm
content: Your question is still shrouded in mystery, confusion, and obfuscation.And writing "OP AMP" instead of "op amp" doesn't make anything clearer.You are not likely to get any helpful answers unless you give a bit more information about what you are trying to do. People on the other side of the internet are not mind readers. You may know what your project is, but nobody else can guess.

author: thm_w
author_rank: Super Contributor
timestamp: May 09, 2024, 12:53:49 am
content: Quote from: IanB on May 08, 2024, 08:43:19 pmThink they are looking for a +/-100V 1A PSU for said opamp.So either one unit or two 100V units that can be strung together.Seems quite dangerous.

author: IanB
author_rank: Super Contributor
timestamp: May 09, 2024, 01:19:15 am
content: Quote from: thm_w on May 09, 2024, 12:53:49 amStill not clear whether they want a lab power supply to do experiments on the bench, or whether they want a fixed power supply module to incorporate in a project?How hard would it be to say something like: "I am designing a project to do X, and to that end I am planning to include this op amp, manufacturer/part no. Y, and to power my project I will need an off-the-shelf DC power supply module that can provide +/- 100 V at up to 1 A. Any suggestions about where to look for such a module?"Then at least some reasonable answers might be forthcoming.But as you say, working as a (presumably) beginner on a project using such dangerous voltages is a recipe for an early demise.

author: BennoG
author_rank: Frequent Contributor
timestamp: May 09, 2024, 07:47:30 am
content: Something like this.https://nl.aliexpress.com/item/1005006736162239.htmlIt is China Export so don't expect a lot of safety but it is 100V 6A for about 52 euro.P.S. I hope you know this is something a beginner should stay far away from, because before you know you have a deadly shock, and no RCD will safe you from this and non of the RCD's I know can handle a DC leakage.Benno

author: tooki
author_rank: Super Contributor
timestamp: May 09, 2024, 12:09:39 pm
content: Quote from: bsnbipen on May 08, 2024, 08:24:35 pmNo, you’ve provided an insufficiently small excerpt from the datasheet. (I’m guessing those are the “absolute maximum” specs, which areNOTthe specs you target.) What is your reason for not just telling us what op amp you want to use and how you intend to use it?

author: bsnbipen
author_rank: Newbie
timestamp: May 09, 2024, 07:21:38 pm
content: Sorry for the misunderstanding.I am trying to use MP108 op amp from (https://www.apexanalog.com/) for a piezoelectric inkjet head.

author: thm_w
author_rank: Super Contributor
timestamp: May 09, 2024, 09:54:19 pm
content: Think it depends on the inkjet being used. Some require as little as 20V.https://blog.arduino.cc/2020/06/16/arduino-based-inkjet-printer-slowly-but-surely-gets-the-job-done/https://www.instructables.com/Make-a-Handheld-InkJet-Printer-Print-on-ANY-Surfac/

author: bsnbipen
author_rank: Newbie
timestamp: May 13, 2024, 03:53:26 pm
content: Yes. I am trying to use an Inkjet head from Microfab (MJ-AT-01), it requires a supply of +-100V.