Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

The diyAudio Store A forum for discussing anything about the products available in The diyAudio Store.

Super Regulator
Super Regulator
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
Reply
 
Thread Tools Search this Thread
Old 20th June 2019, 02:06 PM   #1691
jan.didden is offline jan.didden  Europe
diyAudio Member
 
jan.didden's Avatar
 
Join Date: May 2002
Location: Westende Resort, BE coast
Quote:
Originally Posted by Dirk1 View Post
Hello,
I wanted to build a super regulator with 5 volts output, after post 535.

D2 LM4040AIZ - 5 / NOP
R5 2,5K
R2 5K
U1 AD817
D2 2 red LED serial
R6 bridge
R7 1K

Receive only 10 volts at 227R load resistor as output.
R7, R6 set the output voltage, they scale the ref. If R6 is bridged and the ref is 5V, you expect 5V.
You just have to remember that the inputs of the opamp need to be the same, the ref voltage value. Everything else is just ohms law ;-)
In this case both should be 5V. Are they? And what is the opamp output?

Also, on your pic I see 2 LEDs for D1, NOT for D2. What is the D2 value? If over 5V zener, it won't work. Just use a single LED for D2, cathode towards opamp output.
There's no reason to fiddle with D1.

Jan
__________________
Cable: a potential source of trouble interconnecting two other potential sources of trouble - Erik Margan
Linear Audio pubs and articles . The SilentSwitcher now at diyaudio store SilentSwitcher. Keeping in touch with SY.

Last edited by jan.didden; 20th June 2019 at 02:23 PM.
  Reply With Quote
Old 20th June 2019, 07:33 PM   #1692
Dirk1 is offline Dirk1  Germany
diyAudio Member
 
Join Date: Feb 2013
Location: Kassel
Thank you, Jan, for your help,

Zener diode currently 2.5 volts.

I mistook d1 and d2.

swap d1 red led again against green led.

Replace 10-volt diode with a red led.

Mass the Opamp values ​​and then get in touch.
  Reply With Quote
Old 20th June 2019, 08:21 PM   #1693
jan.didden is offline jan.didden  Europe
diyAudio Member
 
jan.didden's Avatar
 
Join Date: May 2002
Location: Westende Resort, BE coast
Yes. The series diode/LED on the opamp output is to make sure the opamp output sits not too close to ground or to its supply, because most opamps aren't R-R output.
Ideally it should sit at half the supply but it isn't critical at all.

Jan
__________________
Cable: a potential source of trouble interconnecting two other potential sources of trouble - Erik Margan
Linear Audio pubs and articles . The SilentSwitcher now at diyaudio store SilentSwitcher. Keeping in touch with SY.
  Reply With Quote
Old 22nd June 2019, 05:18 PM   #1694
Dirk1 is offline Dirk1  Germany
diyAudio Member
 
Join Date: Feb 2013
Location: Kassel
should + 5volt
is. + 10.9 volts

d1 green led

d2 red LED kathode to ad 817.

ad 817

1 = 0.23V.
2 = 5.710V.
3 = 5.572V.
4 = 0 V.
5 = 0V
6 = 0,912V
7 = 11,762V
8 = 0,23V

Dirk

Last edited by Dirk1; 22nd June 2019 at 05:24 PM.
  Reply With Quote
Old 23rd June 2019, 07:20 AM   #1695
jan.didden is offline jan.didden  Europe
diyAudio Member
 
jan.didden's Avatar
 
Join Date: May 2002
Location: Westende Resort, BE coast
So this is good info. What do we see? The non-inv input is 5.5V, the reference. The inv input is 5.7, this is higher so we expect the opamp output to go down trying to bring the inv input to the same value as the non-inv input. And indeed that happens, output is as low as it can get with this opamp, less than a volt.

With the opamp output at 1V, and a LED in series with the output, the other side of the LED is expected to be roughly at 3V. That is connected to the base of the series transistor so we expect an output of say 2.4V. That is not the case.

That points to a LED the wrong way around. What is the voltage across the LED in series with the opamp output?

Jan
__________________
Cable: a potential source of trouble interconnecting two other potential sources of trouble - Erik Margan
Linear Audio pubs and articles . The SilentSwitcher now at diyaudio store SilentSwitcher. Keeping in touch with SY.
  Reply With Quote
Old 23rd June 2019, 09:36 AM   #1696
Dirk1 is offline Dirk1  Germany
diyAudio Member
 
Join Date: Feb 2013
Location: Kassel
Red LED swapped and kathode controlled.
red led anode on pin 6 output opa 0v.
Kathode red led on pin 6 output opa 11.3 V
LED red anode on cathode measured 11.3V

Dirk

Last edited by Dirk1; 23rd June 2019 at 09:42 AM.
  Reply With Quote
Old 23rd June 2019, 10:11 AM   #1697
jan.didden is offline jan.didden  Europe
diyAudio Member
 
jan.didden's Avatar
 
Join Date: May 2002
Location: Westende Resort, BE coast
Quote:
Originally Posted by Dirk1 View Post
Red LED swapped and kathode controlled.
red led anode on pin 6 output opa 0v.
Kathode red led on pin 6 output opa 11.3 V
LED red anode on cathode measured 11.3V

Dirk
OK, so the LED was right way, with the opa output at 0V. Can you confirm that in that situation VLED anode = Vbase series transistor? What is the series transistor? Can you check it is correctly connected, collector to in input voltage?

What the opamp is doing is trying to pull the pass transistor base down, but not succeeding. Why?

Jan
__________________
Cable: a potential source of trouble interconnecting two other potential sources of trouble - Erik Margan
Linear Audio pubs and articles . The SilentSwitcher now at diyaudio store SilentSwitcher. Keeping in touch with SY.
  Reply With Quote
Old 23rd June 2019, 10:48 AM   #1698
Dirk1 is offline Dirk1  Germany
diyAudio Member
 
Join Date: Feb 2013
Location: Kassel
anode led 2 opa output = 0V.

Q2 = BC556B.

Q2 Collector = Kathode Led2.

Q2= Emitter - Anode LED2 = 11,33V.
Q2= Bais - Anode LED2 =10,55V.
Q2= Collektor - Anode LED2 = 11,3V

Appendix Datasheet LED2.

D1= Grün 5V.

R2= 5K.

D2=Led Rot.

D5= LM4040AIZ 2,5V.

R7= 1K.

R6= Brücke.

R5= 2,5K.

Q3 = d4411

Dirk
Attached Files
File Type: pdf FYL-3014HD1A.pdf (269.7 KB, 13 views)

Last edited by Dirk1; 23rd June 2019 at 11:09 AM.
  Reply With Quote
Old 23rd June 2019, 10:54 AM   #1699
jan.didden is offline jan.didden  Europe
diyAudio Member
 
jan.didden's Avatar
 
Join Date: May 2002
Location: Westende Resort, BE coast
If you are saying that the voltage across LED 2 is zero you have a connection problem. Its anode is connected to the base of the pass device through R3, right? Or maybe you made R3 10k instead of 10 ohms?
So what is the voltage on the base of the pass device? Probably 12V or so?

Jan
__________________
Cable: a potential source of trouble interconnecting two other potential sources of trouble - Erik Margan
Linear Audio pubs and articles . The SilentSwitcher now at diyaudio store SilentSwitcher. Keeping in touch with SY.
  Reply With Quote
Old 23rd June 2019, 02:25 PM   #1700
Dirk1 is offline Dirk1  Germany
diyAudio Member
 
Join Date: Feb 2013
Location: Kassel
I have found a mistake.
Led 2 not soldered against the diode blocking direction, changed.
Q2 = emitter - anode LED 2,2V.
Bais - Anode LED 1.9V.
Collector - anode Led 2,3V.

R3 10R
R2 changed to 10k original.
R5 changed to 4.99K original.

LED 1 + 2 now light up.


output 10,00V
Dirk
  Reply With Quote

Reply


Super RegulatorHide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
About Jung super regulator MaxS Power Supplies 125 30th October 2014 11:47 PM
Jung Super Regulator audionut Solid State 5 7th August 2009 01:07 PM
Super Regulator TheDriver Parts 2 21st July 2008 10:54 AM
Lithos regulator - A new super regulator? peranders Parts 7 8th May 2008 02:01 PM
Super Regulator for DAC rockytro Digital Source 11 19th May 2006 07:31 PM


New To Site? Need Help?

All times are GMT. The time now is 10:23 AM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 14.29%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Copyright ©1999-2019 diyAudio
Wiki