Search found 163 matches

by rarecomponent
Thu Jul 30, 2015 6:09 am
Forum: Moog Music General Topics Forum
Topic: Adjusting slope of a 911EG ?
Replies: 4
Views: 554

Re: Adjusting slope of a 911EG ?

Yes I've done this but not feeding 5v to the VCA (actually using another 911) and indeed it does change the linear/exponential output of the 911/902 combo. I just wondered if there was a simpler way ...the 911 circuit looks pretty simple but alas I'm not electronically fluent to modify the circuit. ...
by rarecomponent
Tue Jul 28, 2015 2:16 pm
Forum: Moog Music General Topics Forum
Topic: Adjusting slope of a 911EG ?
Replies: 4
Views: 554

Re: Adjusting slope of a 911EG ?

Yes, I meant to say that it's probably a case of possibly changing the slope from linear to exponential....if it could be done by altering or adding some components ?
by rarecomponent
Tue Jul 28, 2015 8:55 am
Forum: Moog Music General Topics Forum
Topic: Adjusting slope of a 911EG ?
Replies: 4
Views: 554

Adjusting slope of a 911EG ?

I notice on Arturia's Modular V software , there's an option to adjust the slope of the combined VCA/911.... Would anyone know how to modify the 911 schematic to achieve this ? I'm thinking of the Attack phase more than anything .A small control placed on the panel would be ideal to adjust the slope...
by rarecomponent
Tue Jul 07, 2015 5:03 pm
Forum: Moog Music General Topics Forum
Topic: Power-One supply for modular
Replies: 3
Views: 970

Re: Power-One supply for modular

Brilliant....many thanks Roger...that's just what I hoped to hear. I'm going ahead with the project.
by rarecomponent
Tue Jul 07, 2015 1:07 pm
Forum: Moog Music General Topics Forum
Topic: Power-One supply for modular
Replies: 3
Views: 970

Power-One supply for modular

I'm considering using two Power-One units to power cloned Moog modules . The 12v is no problem but for -6v I've been advised to use a Power One HC5v, modify it slightly , and swap the positive/negative out to deliver the -6v. But would I have problems regarding grounding? ie using two separate trans...
by rarecomponent
Sun Jul 05, 2015 3:53 pm
Forum: Moog Music General Topics Forum
Topic: Power-one supply -6 v?
Replies: 0
Views: 379

Power-one supply -6 v?

Is it possible or has anyone adapted a HCC5 to obtain -6 v output ?
I have a 12v power- one and would like similar on the -6 side.
by rarecomponent
Wed Jul 01, 2015 8:59 pm
Forum: Moog Music General Topics Forum
Topic: Mini Moog A440 ref circuit
Replies: 4
Views: 669

Re: Mini Moog A440 ref circuit

Thanks ...I would like to stick to Moog but yes a crystal based unit is going to be more stable ..I have one in mind which runs on +5 supply
And it all depends if I get the mini Moog a440 working ...
by rarecomponent
Wed Jul 01, 2015 6:37 pm
Forum: Moog Music General Topics Forum
Topic: Mini Moog A440 ref circuit
Replies: 4
Views: 669

Mini Moog A440 ref circuit

I made this circuit up as a stand alone reference unit for my modular but I never got it working_ I didnt pursue the problem however but as there are very few A440 reference circuits out there
I thought I would have another go
Has anyone made this unit as a stand alone ? ,(and got it working )?
by rarecomponent
Mon Jun 29, 2015 12:42 pm
Forum: Moog Music General Topics Forum
Topic: Supplier of 7906 TO-3
Replies: 4
Views: 401

Re: Supplier of 7906 TO-3

I think you are correct...load makes no difference...

I suspected these parts were 7909....I guess they are even though they are clearly marked 7906.

But I've ordered from Little Diode just now and I'll see if these are the real Mcoy
by rarecomponent
Mon Jun 29, 2015 11:52 am
Forum: Moog Music General Topics Forum
Topic: Supplier of 7906 TO-3
Replies: 4
Views: 401

Re: Supplier of 7906 TO-3

Thanks ..I got that site but cannot get passed checkout..

I've been told the 7906 may need a load draw before they regulate properly ..I'll check this and re post.

But I found little diode can supply them on request
by rarecomponent
Mon Jun 29, 2015 10:59 am
Forum: Moog Music General Topics Forum
Topic: Supplier of 7906 TO-3
Replies: 4
Views: 401

Supplier of 7906 TO-3

I've posted this on Muff Wiggkler but I'm looking for a supplier of 7906 TO-3 package
I got some off e bay marked as 7906(on top of regulator) but they output -9. to -10v no where near -6v
I cannot find any others in the UK
by rarecomponent
Mon Jan 19, 2015 9:36 am
Forum: Moog Music General Topics Forum
Topic: adding vibrato to bank of 921b's
Replies: 4
Views: 357

adding vibrato to bank of 921b's

I'm struggling a bit with adding vibrato effect to my 921b oscillators . I used to take a low sine wave from a dot .com module and then route it thru a 995 attenuator into the frequency input of the 921a but I found that tuning became unstable with this method. With various degrees of vibrato the pi...
by rarecomponent
Sun Jan 18, 2015 11:41 am
Forum: Moog Music General Topics Forum
Topic: Club of the Knobs psu
Replies: 5
Views: 528

Club of the Knobs psu

No info anywhere, no reply from COTK....

I know my COTK 921is designed for a +/-12 v supply ...
Can it be safely run on +/- 15 v ?
by rarecomponent
Thu Jan 15, 2015 7:58 pm
Forum: Moog Music General Topics Forum
Topic: s trig
Replies: 7
Views: 499

Re: s trig

Thanks AM for taking the time to answer my query and supplying some good info and links. Well I think that's answered my problem or at least stopped me worrying about it. By the way your 950 project looks pretty good, I too was considering a keyboard project but not with midi features. In fact it wa...
by rarecomponent
Wed Jan 14, 2015 11:13 pm
Forum: Moog Music General Topics Forum
Topic: s trig
Replies: 7
Views: 499

Re: s trig

Yes ..all my 911's work fine. ( I think !) What I'm trying to find out is does the 950 keyboard controller have any " pull up" voltage associated with the S trig output. I realise the S trig is simply two terminals shorted but would there be any difference by say shorting a 911 with a scre...