This will give you the pin outs sorry about the long link http://www.dse.com.au/cgi-bin/dse.filereader?4316de39096b661a2740c0a87f9c06e6+EN/catalogs/SUP0001850 ...
WOW! Thanks everyone. Hopefully today I can spend an hour or so going over each of the suggestions trying to learn the differences between them. At least...
I am putting together parts for an EDM and one of the most expensive parts are power resistors. I am hoping there is a way to use a transistor or some such to...
I've been using a RFP50N06, an N-Channel power mosfet for several of my solenoid related projects. It will handle up to 50 amps, purely overkill for your app...
... volts ... Sure, just control the base and sink the heat. But... Every single parameter of a transistor changes with temperature. There are high voltage...
On Thu, 01 Sep 2005 16:48:39 +0200, Dave Mucha <dave_mucha@...> ... can be. base current *beta is roughly collector current, in linear operation. ST...
Cool application, thanks Dan. It sure seems as though the Mosfets can replace Relays in many different applications. Perhaps I shoudl study them buggers a ...
I assume what you want is a constant current source. You can build one by having a moderate emitter resistor and a fixed base voltage. The base will have a...
... overkill ... Digi-Key. ... spike ... simply ... PW for ... die-cast ... One MAJOR difference in the uses is that the MOSFET can only run DV loads. another...
Thinking a little more about this, the use is to charge a cap, then once a voltage is reached, the cap will discharge into the work. Durng the dischare of the...
I spent a little time looking over some of the datasheets for mosfets. There is a pretty wide range of voltages and amps they can handle. It makes me wonder,...
On Wednesday 31 August 2005 05:08 pm, lcdpublishing wrote: <...> ... Not if that part isn't switching the load... ... There are 24V three-terminal regulators...
... I would use a MOSFET to control a relay or a single inductive load. However, there are things where relays are better. First, they don't heat up as a...
... Look a little deeper. a 27 amps Mosfet can only deliver 27 amps at 1/100 duty cycle. it is more like a 7 amp unit if it is to be on all the time. MOSFETs...
... Yeah, I've been downloading and looking at a LOT of datasheets lately. You never see less than a 3-1 spread for beta, and often it's higher. You also ...
... Two reasons: Isolation. A relay's contacts is in no way connected in any way to what's driving it. Different failure modes. A MOSFET will possibly fail...
I wasn't sure what a EDM power supply was, Electrostatic Discharge Machining. You gotta love Google! I read one or two articles on it, and just threw a .pdf...
On Thu, 01 Sep 2005 19:20:10 +0200, Dave Mucha <dave_mucha@...> ... You have several options. The best solution is to use inductors and transistors or...
On Thu, 01 Sep 2005 19:21:42 +0200, lcdpublishing ... they both have their place. Sometimes you can interchange, but sometimes only with considerable effort. ...
On Thu, 01 Sep 2005 20:47:43 +0200, Daniel Nicoson ... the fet will be a gonner rather quickly too. I suggest you place inductors and freewheeling diodes. ST...
... Another good reason to use a relay is inrush current. Large electric lights (90 - 130w @ 12v) have a very low resistance when the filament is cold. For...
One idea is to eleminate the capacitor altogether. If you can fire the mosfet and pulse it, you should be able to deliver a spark to the work in the same way...
On Thu, 01 Sep 2005 23:09:12 +0200, Dave Mucha <dave_mucha@...> ... yes, if you increase the size of the supply accordingly that seems not a bad idea. ...
One of the sites I scanned today re: EDM suggested a resistor in the 1500 W range! Kind of reminds me of the carbon arc lamps I used to build as a kid (6th or...
not a favorite anymore I'll bet/// ... From: rtstofer To: Electronics_101@yahoogroups.com Sent: Thursday, September 01, 2005 9:08 PM Subject: [Electronics_101]...
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