EEVblog Electronics Community Forum
Products => Test Equipment => Topic started by: nisios on June 26, 2020, 01:47:47 am
-
Hi everyone.
Can anyone help identify this mistery Philips PE 1600 bench equipment?
It looks to me to be some sort of power stabilizer maybe?
I can see I giant transformer, and a couple smaller ones, what looks like some big strangely shaped capacitors and a small board on the back. It has an AC input and an AC output socket.
Any help would be great, I can't find a thing online, and was hoping this could be some sort of isolatad power transformer thing of some sort.
Many thanks.
-
:( I had some trouble because of image size, here are the photos from the back.
-
It looks like a stabilizer, I guess the plate says it all: wide varying input voltage, output 220V 0.1%
Do you have any pictures of the guts (the inside)?
Whether it is isolating or not is a good guess, maybe a multimeter can tell you more?
-
I remember seeing things like that when I was a child in neighbors houses. My family never had one...
-
Is it a ferroresonant stabilizing transformer, similar to those sold by Sola in US? If so, they are frequency sensitive (need to specify 50 or 60 Hz). However, the current production from Sola/Hevi-Duty is rated for 1% typical output regulation, while your nameplate shows 0.1%. Back in the day, Sola made plate/filament regulating transformers that simplified power supply design for vacuum tube circuits: as a graduate student, we inherited several pieces of custom vacuum-tube equipment made at Argonne Labs that used such transformers. As a clue, look for a large internal capacitor used to resonate a winding of the transformer, which is required for proper operation.