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| Page 1 of 1 [10 Posts] |
| Author | Message |
|---|---|
 Topic: Arp 2700 soloist service manual and schematics |
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| guatis Replies: 2 Views: 8996 |
Posted: Sun Dec 19, 2021 5:19 pm Subject:
Arp 2700 soloist service manual and schematics
Forum: How-tos » Manuals, Instructions, and Documents |
| Me too! | |
| Topic: TZFM SAW VCO |
|
| guatis Replies: 536 Views: 623583 |
Posted: Sun Feb 18, 2018 3:31 pm Subject:
TZFM SAW VCO
Forum: DIY Hardware and Software |
| Could anyone please kindly point me to the schematics for the TZ SAW VCO? I like to design my own PCBs but would gladly buy a PCB if that grants me access to the schematics.
Regards |
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| Topic: Bare SAW VCO interest? |
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| guatis Replies: 80 Views: 102755 |
Posted: Thu Jan 29, 2009 6:24 am Subject:
Bare SAW VCO interest?
Forum: DIY Hardware and Software |
 Wow. Surely i'll try this method with the Saw Core. I'll be more patient this time 
A million thanks for your advice... The dial-a-tempco circuit on my website turned out to have a st ... |
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| Topic: Bare SAW VCO interest? |
|
| guatis Replies: 80 Views: 102755 |
Posted: Wed Jan 28, 2009 6:58 pm Subject:
Bare SAW VCO interest?
Forum: DIY Hardware and Software |
| Well. Today i did some stability measuring, and i got pretty good results with drift over time (~0.02%). Then i realized it doesn't make much sense to test drift over time, but instead drift over temp ... | |
| Topic: Bare SAW VCO interest? |
|
| guatis Replies: 80 Views: 102755 |
Posted: Wed Jan 28, 2009 1:06 pm Subject:
Bare SAW VCO interest?
Forum: DIY Hardware and Software |
| (and obviously adjust oher resistor values to get similar ranges)
I think everything else that is critical goes to +/-5V. Your results will be of interest to many folks here, so please keep us poste ... |
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| Topic: Bare SAW VCO interest? |
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| guatis Replies: 80 Views: 102755 |
Posted: Wed Jan 28, 2009 10:25 am Subject:
Bare SAW VCO interest?
Forum: DIY Hardware and Software |
| ...you will need to change D5 to an 8.2V Zener.
Ian Totally right. I should switch to a higher voltage zener to provide the 6-7V (and obviously adjust oher resistor values to get similar ranges) ... |
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| Topic: Bare SAW VCO interest? |
|
| guatis Replies: 80 Views: 102755 |
Posted: Wed Jan 28, 2009 8:55 am Subject:
Bare SAW VCO interest?
Forum: DIY Hardware and Software |
| Ian,
I tested the circuit on breadboard last night and it worked after a few minutes of debugging. I noticed the R29 resistor gets quite hot during operation, and if i pull it out, the 15V rail cur ... |
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| Topic: Bare SAW VCO interest? |
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| guatis Replies: 80 Views: 102755 |
Posted: Wed Jan 28, 2009 7:54 am Subject:
Bare SAW VCO interest?
Forum: DIY Hardware and Software |
| btw...sorry if this is an obvious thing but what are D2, and D3 (lm33365) doing along with c3 and c4..is it some sort of regulation or reference? i dont see it connecting to anything but the rails an ... | |
| Topic: Bare SAW VCO interest? |
|
| guatis Replies: 80 Views: 102755 |
Posted: Tue Jan 27, 2009 7:04 pm Subject:
Re: Sync?
Forum: DIY Hardware and Software |
|
I won't be able to actually to try this, but you should be able to get sync by kicking A3 pin3,al la ENS-76 Option 1: 1.) Remove C10 2.) Increase R30/R31 to, say, 33k and 120k. 3.) Feed t ... |
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| Topic: Bare SAW VCO interest? |
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| guatis Replies: 80 Views: 102755 |
Posted: Mon Jan 26, 2009 7:51 pm Subject:
Sync?
Forum: DIY Hardware and Software |
| Hi Ian,
What would be the best possible way to implement an external sync input on you SAW CORE? . Should it be something similar to the MFOS Vco? Any thoughts on this? cheers Ben |
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| Page 1 of 1 [10 Posts] |
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