What is a "positive switching regulator" ?
I saw these on Ebay and thought about 300b filamemts.
http://www.ebay.co.uk/itm/Positive-Swit ... 566c31899a
Positive Switching Regulators
- pre65
- Amstrad Tower of Power
- Posts: 21399
- Joined: Wed Aug 22, 2007 11:13 pm
- Location: North Essex/Suffolk border.
#1 Positive Switching Regulators
The only thing necessary for the triumph of evil is for good men to do nothing.
Edmund Burke
G-Popz THE easy listening connoisseur. (Philip)
Edmund Burke
G-Popz THE easy listening connoisseur. (Philip)
- jack
- Thermionic Monk Status
- Posts: 5502
- Joined: Wed Dec 29, 2010 8:58 pm
- Location: ɐılɐɹʇsnɐ oʇ ƃuıʌoɯ ƃuıɹǝpısuoɔ
- Contact:
#3
Looks like a rather old-style buck converter - that is an SMPS that drops the voltage from the input voltage to a specified output voltage - vastly more efficient than a linear voltage regulator.
First units look very old. Second ones much better but not mains isolated by the looks of it.
First units look very old. Second ones much better but not mains isolated by the looks of it.
Vivitur ingenio, caetera mortis erunt
- Mike H
- Amstrad Tower of Power
- Posts: 20189
- Joined: Sat Oct 04, 2008 5:38 pm
- Location: The Fens
- Contact:
#4
Second one has 5 - 32V input, not mains.
Might be AC too, if the large black chip is a bridge rectifier.
Might be AC too, if the large black chip is a bridge rectifier.
"No matter how fast light travels it finds that the darkness has always got there first, and is waiting for it."
- Dave the bass
- Amstrad Tower of Power
- Posts: 12276
- Joined: Tue May 22, 2007 4:36 pm
- Location: NW Kent, Darn Sarf innit.
#5
'Non-synchronous Rectifier' the spec says so AC supply maybe?
Possibly 30mV of 300Khz on the filament though looking at the spec?
Possibly 30mV of 300Khz on the filament though looking at the spec?
"The fat bourgeois and his doppelganger"