HT power supply high? - Page 2

Nuuk · 14th September 2012, 03:01 PM

Quote:

Originally Posted by palmas

What gain would you like to have?

Around 10 db max.

palmas · 14th September 2012, 03:24 PM

something like this?

Nuuk · 15th September 2012, 07:59 AM

Palmas, I'm nowhere near competent enough to assess your design. I was thinking more of being able to adapt the existing circuit to have lower gain, rather than building a complete new one.

DF96 · 15th September 2012, 09:30 AM

In that circuit the gain is more or less set by the valve. To get different gain you need a different valve or a different circuit. A different valve might mean circuit changes anyway. It is only circuits with significant negative feedback which can be simply altered to get different gain. Even then, less gain means higher loop gain which can mean instability.

Nuuk · 15th September 2012, 09:52 AM

Thanks DF96. I'll leave that one well alone then, and think about building a new one using the same power supply (which is in a separate box).

15th September 2012, 07:59 AM	#13
Nuuk diyAudio Member Join Date: Feb 2003 Location: Somerset, SW England	Palmas, I'm nowhere near competent enough to assess your design. I was thinking more of being able to adapt the existing circuit to have lower gain, rather than building a complete new one. __________________ The truth need not be veiled, for it veils itself from the eyes of the ignorant.

15th September 2012, 09:52 AM	#15
Nuuk diyAudio Member Join Date: Feb 2003 Location: Somerset, SW England	Thanks DF96. I'll leave that one well alone then, and think about building a new one using the same power supply (which is in a separate box). __________________ The truth need not be veiled, for it veils itself from the eyes of the ignorant.

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Opinions on Power Supply HT Ripple Current	techbiker	Power Supplies	11	31st January 2012 03:08 AM
High current Jung power supply with HT regulator pcb	chris found	Power Supplies	0	13th April 2011 07:25 PM
Power supply:Universal AC input/ Full range,High Efficiency, and High reliability	hang	Vendor's Bazaar	12	24th July 2009 03:46 AM
high frequency high voltage power supply...	moray james	Planars & Exotics	6	23rd July 2008 07:57 PM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

15th September 2012, 09:30 AM	#14
DF96 diyAudio Member Join Date: May 2007	In that circuit the gain is more or less set by the valve. To get different gain you need a different valve or a different circuit. A different valve might mean circuit changes anyway. It is only circuits with significant negative feedback which can be simply altered to get different gain. Even then, less gain means higher loop gain which can mean instability.