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Old 12th January 2012, 03:58 PM   #7131
Salas is offline Salas  Greece
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Ah, the Pavlov's Dog...ringing a bell will make him drool. Moving Missuri vibrato, preferred Song Dance and Late November in that album...

Congrats on your progress. Now you get the benefit of a proper supply as the phono was early married with. The simplistic regs got first developed to support the phono as a matter of fact, to keep the record that is.
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Old 12th January 2012, 04:17 PM   #7132
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Hi Bksabath

I like pampered menial very much. Unfortunately I lost my vinil copy long ago so I only have it on CD. Not the same thing.

Can you give us details about your reflektor build ?

Vref cap ?

Output cap ?

Operating current ?
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Old 13th January 2012, 12:21 AM   #7133
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I use to play that a lot in may radio station in the late 70 I just wish my ears where the same and that I still had the PD25.

When I moved I left behaind quite a few records and finaly found this in one of the local second hand shops.

I supose that now with intraweb and such it shuld be easy enough to get a copy.

I have the CD myself (not getting in to sampling frequency argument) and I do not understand why it sound so much more copressed and lifless with killed off dinamics.
I rather listen to the scratchess.

I will post full SCH and pictures soon

Output cap ? does it have one?

Vref (if is the same one I am thinking about) 1mU pana FM

Operating current is 80 mA for 2 channels Simplistic (will have to remake pcb for second chanell reflektor after much component swapping)
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Old 13th January 2012, 12:48 AM   #7134
Salas is offline Salas  Greece
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He means the small value plastic capacitor in the RC network across the Reflektor's output.
''Vref cap'' Yes, he means the 1000uF one.
CCS current is governed by Vbe/R1 and you may crank it up to 200 or 300mA if your sinks still feel comfortable, its beneficial in that it lowers the reg's impedance. From that juice, only about 40mA tops goes to each phono channel. The rest burns to satisfy the sonic gods. Catchy name for a band btw, isn't it?
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Old 13th January 2012, 08:02 AM   #7135
RCruz is offline RCruz  Switzerland
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Yes, I would like to know what is the value of the cap on the output zobel (small film).

You will be surprised if you set up a higher current in the CCS.
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Old 13th January 2012, 08:43 AM   #7136
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Hi there
Small cap is a 1 u MKS

I believe that MKS series does not sound that good and I am planning to change that to a better one.

Tanks for tip on R1 I do understand that increasing current improves on sound.

Also interesting that the dissipation current consumption can be lower which may be a bonus for battery operation.

Sinks should be ok as I am using a Pesante dissipante HI Fi 2000 (got 2 when I built the PSU for My F5)

I am going to draw proper SCH of both Reflektor and Simplistic and post later
for now get the picture.

Treat of the day
http://www.youtube.com/watch?v=Be7JB...eature=related

WE did a gig and run out of Juice the only thing running was the Dry ICE as we used the hot water from the transit for it.
The rest turned in to an acoustic section.
The first Album is prety good sound wise
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File Type: jpg Reflector.jpg (616.0 KB, 212 views)

Last edited by Bksabath; 13th January 2012 at 08:52 AM.
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Old 13th January 2012, 09:30 AM   #7137
Salas is offline Salas  Greece
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Goth on Friday the 13th...most suitable.

Yes extra current can be a sonic bonus in such regs since it lowers their impedance as I mentioned. Still they can run at max load demand+20mA as minimum when consumption is an issue. 1uF MKP could be different indeed. That capacitor is influential and there is scope for experimentation.
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Old 13th January 2012, 12:04 PM   #7138
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Tanks Salas

I am going to change that straight away.

I have been revising the SCH compared to the boards and reading a bit more about the circuit development.

I have IRF 610 (one of fw bits I have in stock at present) I read samwhere that it is bad choice and I am going to replace that as well.

The proper 640 is on its way
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Old 13th January 2012, 01:08 PM   #7139
Salas is offline Salas  Greece
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That's the proper output Mosfet in Reflektor, the other one lacks current gain in that position.
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Old 21st January 2012, 08:26 AM   #7140
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Question Low MC pre-pre

I want to make the Low MC pre-pre 20dB 7mA K170BL as per psgr PDF but I have several doubts:

-How can be modified to use BiB regs instead 7809
-I have 3 SK170BL 6.73mA Idss & 1 SK170BL 6,74mA Idss, I believe isn't necessary to modifie the schematic values, right?
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