Holm Tiffe wrote: > Ken Seefried wrote: > > > I'm going to be working on my 11/730s power supply, so I'm in the > > market for an ESR meter. I've seen some (older) recommendations for > > the AnaTek 'Blue' and various 'Dick Smith' derivatives. However, eBay > > is flooded with knockoff Mega328 based ESR/Transistor/SCR/etc. testers > > all looking like: > > > > http://www.amazon.com/DROK-Multifunction-Mega328-Transistor-Capacitor/dp/B00NKY3M1W/ref=sr_1_16?ie=UTF8&qid=1443561246&sr=8-16&keywords=esr+meter > > > > Anyone had any experience with one of these devices? > > > > KJ > > I own a old precise russian LCR Bridge and I have two of the modern > Atmega328 based "Transistor Testers" that both will do the job at least for > smaller capacitors, but I mostly use a simple homebuild ESR Meter like > this: > http://ludens.cl/Electron/esr/esr.html > > I know, that isn't a precision device but it is what you mostly need: a > fast good/bad test solution. > > Because of its small measuring voltage of approx 200mV PN junctions don't > get opened so that you can quick check electrolytics in the circuit w/o > desoldering them fist. > The used transformer in my case is a small ferrite transformer from an old > PC-PSU (driver circuit). I coud use it w/o to change anything. > > Regards, > > Holm > --
https://www.youtube.com/watch?v=NlfT9LEMbV4 Regards, Holm -- Technik Service u. Handel Tiffe, www.tsht.de, Holm Tiffe, Freiberger Straße 42, 09600 Oberschöna, USt-Id: DE253710583 www.tsht.de, i...@tsht.de, Fax +49 3731 74200, Mobil: 0172 8790 741
