Datasheet psu, 0.1v to 50v @1a...

redrabbit · 21st April 2006, 12:13 PM

HERE

:
(page 12, Figure 14)
http://www.intersil.com/data/fn/fn817.pdf

...My question is, what would come between this regulator circuit, and the power transformer.......bridge and smoothing caps??

...And what

transformer say you?

=RR=

peranders · 21st April 2006, 01:01 PM

You'll need 35-40 VAC, 70-100 VA, 2200-4700 uF in smoothing.

I friend of mine built this PS long time ago and it worked pretty well.

redrabbit · 22nd April 2006, 03:36 AM

Thanks peranders.

...btw, how could this be turned into a dual polarity supply?
...or is that a drasticly different circuit altogether ?

=RR=

peranders · 22nd April 2006, 07:03 AM

You can built two identical PS and then connect them in series. This will give you a dual suuply.

redrabbit · 22nd April 2006, 09:58 AM

I'm sorry, I meant a bipolar psu....."plus, minus ( and ground, 0v)" volts output.

=RR=

peranders · 22nd April 2006, 10:14 PM

I ment that too.

redrabbit · 26th April 2006, 02:32 AM

OK, so using a center tapped tranny....
positive is one psu,
negative is another,
....and 0v (ground) is shared with both.

Correct?? (

)

=RR=

21st April 2006, 12:13 PM	#1
redrabbit diyAudio Member Join Date: Oct 2004	Datasheet psu, 0.1v to 50v @1a... HERE : (page 12, Figure 14) http://www.intersil.com/data/fn/fn817.pdf ...My question is, what would come between this regulator circuit, and the power transformer.......bridge and smoothing caps?? ...And what transformer say you? =RR=

21st April 2006, 01:01 PM	#2
peranders Electrons are yellow diyAudio Member Join Date: Apr 2002 Location: Göteborg, Sweden Blog Entries: 1	You'll need 35-40 VAC, 70-100 VA, 2200-4700 uF in smoothing. I friend of mine built this PS long time ago and it worked pretty well. __________________ /Per-Anders (my first name) or P-A as my friends call me BPA300 Group Buy Round 4, SMD-kit and DRV134 pcb, checking interest Sign up HERE Rectifier bridge RFB03 Group Buy Round 2, checking interest Sign up HERE

22nd April 2006, 07:03 AM	#4
peranders Electrons are yellow diyAudio Member Join Date: Apr 2002 Location: Göteborg, Sweden Blog Entries: 1	You can built two identical PS and then connect them in series. This will give you a dual suuply. __________________ /Per-Anders (my first name) or P-A as my friends call me BPA300 Group Buy Round 4, SMD-kit and DRV134 pcb, checking interest Sign up HERE Rectifier bridge RFB03 Group Buy Round 2, checking interest Sign up HERE

22nd April 2006, 10:14 PM	#6
peranders Electrons are yellow diyAudio Member Join Date: Apr 2002 Location: Göteborg, Sweden Blog Entries: 1	I ment that too. __________________ /Per-Anders (my first name) or P-A as my friends call me BPA300 Group Buy Round 4, SMD-kit and DRV134 pcb, checking interest Sign up HERE Rectifier bridge RFB03 Group Buy Round 2, checking interest Sign up HERE

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22nd April 2006, 03:36 AM	#3
redrabbit diyAudio Member Join Date: Oct 2004	Thanks peranders. ...btw, how could this be turned into a dual polarity supply? ...or is that a drasticly different circuit altogether ? =RR=

22nd April 2006, 09:58 AM	#5
redrabbit diyAudio Member Join Date: Oct 2004	I'm sorry, I meant a bipolar psu....."plus, minus ( and ground, 0v)" volts output. =RR=

26th April 2006, 02:32 AM	#7
redrabbit diyAudio Member Join Date: Oct 2004	OK, so using a center tapped tranny.... positive is one psu, negative is another, ....and 0v (ground) is shared with both. Correct?? ( ) =RR=

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