Pearl - PH-44 ( Phaser )

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Pearl - PH-44 ( Phaser )

Postby borislavgajic » 04 Jul 2008, 18:03

http://www5b.biglobe.ne.jp/~houshu/synth/Ph44core.gif

Does enyone have something more on this???
please
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Re: Pearl - PH-44 ( Phaser )

Postby Bernardduur » 15 Nov 2008, 21:19

I have one now open and tracing........ man, big pedal with a lot of connections :)
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Re: Pearl - PH-44 ( Phaser )

Postby The Rotagilla » 16 Nov 2008, 03:05

I've only got the schematic for the PH-03, sorry. :cry:
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Re: Pearl - PH-44 ( Phaser )

Postby borislavgajic » 16 Nov 2008, 12:27

I have one now open and tracing.....


some guts ??? ...................please.........thanks :thumbsup
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Re: Pearl - PH-44 ( Phaser )

Postby kierc » 16 Nov 2008, 16:59

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Re: Pearl - PH-44 ( Phaser )

Postby Bernardduur » 17 Nov 2008, 12:08

Image
Image
Image
Image
Image
Image
Image
Image
Image
Image
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Re: Pearl - PH-44 ( Phaser )

Postby Bernardduur » 17 Nov 2008, 14:36

Schematic (put in parts as it is a HUGE one :))

PSU
Audio path
Phase stages
Parameters
Switching

The huge thing on the right on the parameters schematic is a MC14007 IC with the pinnumbers..... didn't have on in my software. Everything in this unit is fed with the V+2 (12V) but the LEDs are fed with V+1 (18V). Speed ramps up and down when the speed button is pressed.

Part marked "switch" in "Switching" schematic connects to "Sw" in "Audio path" schematic
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Re: Pearl - PH-44 ( Phaser )

Postby The Rotagilla » 17 Nov 2008, 15:22

Awesome, thank you!
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Re: Pearl - PH-44 ( Phaser )

Postby borislavgajic » 17 Nov 2008, 16:56

thanks...... it is big!!!
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Re: Pearl - PH-44 ( Phaser )

Postby unbeliever » 17 Nov 2008, 21:29

Thanks. :thumbsup
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Re: Pearl - PH-44 ( Phaser )

Postby Dirk_Hendrik » 18 Nov 2008, 19:02

Bernard,
Excellent work! Those buggers are bitches to trace.
Sorry. Plain out of planes.

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Re: Pearl - PH-44 ( Phaser )

Postby borislavgajic » 20 Feb 2010, 23:53

can somebody please repost those images and schemes???

thanks

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Re: Pearl - PH-44 ( Phaser )

Postby Bernardduur » 21 Feb 2010, 15:50

I'll upload em

Check
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Re: Pearl - PH-44 ( Phaser )

Postby mictester » 21 Feb 2010, 19:38

Bernardduur wrote:I'll upload em

Check


Excellent!

Now that's a different way of doing a phase stage! If you select the transistors (or use an array on an IC), you can eliminate differences between stages. I'm going to have a play with that way of doing things. Thanks for posting your tracing! :thumbsup
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Re: Pearl - PH-44 ( Phaser )

Postby borislavgajic » 21 Feb 2010, 21:46

Bernardduur wrote:I'll upload em

Check

:hug: :D

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Re: Pearl - PH-44 ( Phaser )

Postby floris » 10 Oct 2015, 13:26

Bernardduur wrote:I'll upload em
Check

I know it has been a long time...
But can someone upload again the original, and hopefully higher resolution than currently on PhotoBucket, schematic picts of this PH44?
I'm having trouble reading the components.
Thanks!
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Re: Pearl - PH-44 ( Phaser )

Postby Bernardduur » 12 Oct 2015, 21:24

Pearl PH44 - Phase.jpg
Pearl PH44 - LFO.jpg
Pearl PH44 - Audio.jpg
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Re: Pearl - PH-44 ( Phaser )

Postby Bernardduur » 12 Oct 2015, 21:27

Pearl PH44 - Power.jpg
Pearl PH44 - Switch.jpg
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Re: Pearl - PH-44 ( Phaser )

Postby floris » 13 Oct 2015, 15:22

Thank you Bernardduur for the high res schematics!
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