Author Topic: 107 volt regulator  (Read 1676 times)

0 Members and 1 Guest are viewing this topic.

Offline BurningTantalumTopic starter

  • Frequent Contributor
  • **
  • Posts: 358
  • Country: au
107 volt regulator
« on: December 23, 2017, 12:13:18 pm »
A non-technical friend called to say that he had acquired a box of "those things that you have in your workshop" and did I want it, so I told him to bring it round. It was a huge cardboard box full of electronic components, some in ziplock bags, some loose. It has taken me all afternoon to sort them into heaps on the dining table- anything with 3 legs in one heap, ICs in another heap, caps, diodes, connectors etc. I think that it came from an electronic supplier that closed down many years ago in a town down the coast. Many of the plastic bags have flaked to bits with UV exposure, so I grabbed handfuls of loose components and sorted them roughly.
One component (among many) caught my eye. It is a STR440 in a modified TO3 case (3 legs.). I cannot find any data on this, other than it is a monolithic 107V output 0.6A regulator.
I don't recall seeing anything that needed 107V specifically.
Any ideas for its intended use?
I have seen the 3 leg TO3 case style only once before, and it was a high-voltage switching transistor by Motorola used in a vehicle ignition system.
Regards, BT
 

Offline RES

  • Regular Contributor
  • *
  • Posts: 109
  • Country: 00
Re: 107 volt regulator
« Reply #1 on: December 23, 2017, 12:38:31 pm »
STR440 is a high (107V) voltage regulator to supply the picture tube coil of a tv.
« Last Edit: December 23, 2017, 12:41:24 pm by RES »
 

Offline Audioguru

  • Super Contributor
  • ***
  • Posts: 1507
  • Country: ca
Re: 107 volt regulator
« Reply #2 on: December 23, 2017, 03:28:47 pm »
Picture tube? Don't be silly, TVs don't have a picture tube and a coil, instead they have an LCD screen.
Oh, I think I remember that TVs a long time ago had a picture tube and deflection coils.
 
The following users thanked this post: Mr. Scram

Offline David Hess

  • Super Contributor
  • ***
  • Posts: 16617
  • Country: us
  • DavidH
Re: 107 volt regulator
« Reply #3 on: December 23, 2017, 07:28:18 pm »
108 volts is also common in oscilloscopes which may have something to do with being twice 54 volts.
 

Offline jaycee

  • Regular Contributor
  • *
  • Posts: 206
  • Country: gb
Re: 107 volt regulator
« Reply #4 on: December 24, 2017, 12:41:12 am »
Sanken commonly made modules like this and judging by the part number it's one of those!
 

Offline Mr. Scram

  • Super Contributor
  • ***
  • Posts: 9810
  • Country: 00
  • Display aficionado
Re: 107 volt regulator
« Reply #5 on: December 24, 2017, 12:54:39 am »
Picture tube? Don't be silly, TVs don't have a picture tube and a coil, instead they have an LCD screen.
Oh, I think I remember that TVs a long time ago had a picture tube and deflection coils.
You did a funny!
 

Offline BurningTantalumTopic starter

  • Frequent Contributor
  • **
  • Posts: 358
  • Country: au
Re: 107 volt regulator
« Reply #6 on: December 24, 2017, 03:23:41 am »
Thanks everyone- I knew that someone would know!
Happy New Year,  BT
 

Offline Cyberdragon

  • Super Contributor
  • ***
  • Posts: 2676
  • Country: us
Re: 107 volt regulator
« Reply #7 on: December 25, 2017, 04:03:08 am »
Picture tube? Don't be silly, TVs don't have a picture tube and a coil, instead they have an LCD screen.
Oh, I think I remember that TVs a long time ago had a picture tube and deflection coils.

What is this antique tech you call an LCD? Everybody knows TVs have OLEDs. ;)
*BZZZZZZAAAAAP*
Voltamort strikes again!
Explodingus - someone who frequently causes accidental explosions
 
The following users thanked this post: 001


Share me

Digg  Facebook  SlashDot  Delicious  Technorati  Twitter  Google  Yahoo
Smf