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VCC1 and VEE1 = +-80VHere are the schematics
R25 = 51K
D9 = 10K
R21 = 12K
R29 = 330R
R34 = 10K
R33 = 510R // 10nF
R32 should parallel with 5pF.
You should use an regulator different to VCC1/VEE1 to Input Driver block. It's better than all.
Only TL5000 using an Regulator different to Input Driver floor.
TL2500 below using one Power Supply for All floor.
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I used the 2N5564 at Here.
2N5564 TO-71 6L | Linear Integrated Systems | Trendsetter Electronics
They're better than 2N556x fake
Attachments
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Thanks for the comments.
The values I have in my schematic is the same as the very well behaving and sounding Telos 400 clone from Quanghao´s hand.
I guess when you using a regulator for the input VCC1 VEE1 you do not need a Zener in the cascode, but if you use the unregulated VCC1/VEE1 it is mandatory.
R33 and R34 are wrong when using +/-80V. The values I have on the schematic is for +/-60V. So R34 should be 10K/3W as you say, but R33 should be 330/3W and no 10 nF capacitor . R 29 should be 220 Ohm.
No reason to put 5pF in parrallel with R32. The amp is completely stable without.
Why do you think I should change the values for R29 - R33 - R21 and the R25/D9 combination. It works perfectly well with the values shown?
I'm bad English.
You righ, some resistor change by Power Supply.
I will send orignal schematic to your inbox messenger.
I hope you will use this schematic for make Clone exactly.
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I not good Electronic. I'm application engineer in biochemiatry analyzer device.
I self-study and self-employment electronic. Should, I only said from "Orignal" schematic.
Please check inbox to clair more.
I hope you can make an GM Clone exactly to anyone.
Good lucky to all.
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I used the 2N5564 at Here.
2N5564 TO-71 6L | Linear Integrated Systems | Trendsetter Electronics
They're better than 2N556x fake
I have been using these. Fakes or no fakes, they perform very well indeed
Attachments
I have been using these. Fakes or no fakes, they perform very well indeed
They are produce at week 20 of 2003 year
I doubt they are fake
6 legs are easily oxidized and change colors.
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Be careful!
Search "2N5564" on LINEAR INTEGRATED SYSTEMS website. Result:
DMOS Switches, JFET Amplifiers, BIFET Amplifiers, MOSFETS
Datasheet on micros shop is trial version:
https://shop.micross.com/pdf/LSM_2N5564_TO-71.pdf
Search "2N5564" on LINEAR INTEGRATED SYSTEMS website. Result:
DMOS Switches, JFET Amplifiers, BIFET Amplifiers, MOSFETS
Datasheet on micros shop is trial version:
https://shop.micross.com/pdf/LSM_2N5564_TO-71.pdf
I used the 2N5564 at Here.
2N5564 TO-71 6L | Linear Integrated Systems | Trendsetter Electronics
They're better than 2N556x fake
Be careful!
Search result for 2n5564 on linersystems website:
DMOS Switches, JFET Amplifiers, BIFET Amplifiers, MOSFETS
Datasheet on micross shop is trial version!
https://shop.micross.com/pdf/LSM_2N5564_TO-71.pdf
I used the 2N5564 at Here.
2N5564 TO-71 6L | Linear Integrated Systems | Trendsetter Electronics
They're better than 2N556x fake
Its LSK389C not 2N5564. Stop advertisement your bad items.
I have been using these. Fakes or no fakes, they perform very well indeed
Its 100% fake!
An externally hosted image should be here but it was not working when we last tested it.
What problem of our at here.
I advertisement to who ? I'm received fee ads from Linear ?
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I have compare LSK389 and LSK489 on my clone. Conclusion: I like 389 a little bit than 489.
The LSK489 makes the sound a bit more airy (very subtle) and less "luxurious", and bass is "weak foot".
I have further experience with genuine NS 2N3958, I think it the best among the dual JFET I've ever tested. The sound of 2N3958 is luscious, like a sexy woman; its punchy bass and wonderful mid-highs makes it incredible.
I would suggest 2N3958>K389=~2N556X>LSK489.
Don't get stuck in 2N5564!
I mean, it's not that bad, but you don't have to insist on using 2N556X for GM, this just makes fakes more and more on the market, also raised prices.
I have been using these. Fakes or no fakes, they perform very well indeed
Recently, I found that there are 2N556X on Mouser, manufactured by InterFet, named IFN556X. You can buy some.
No offence but your metal case JFET looks very fake. Probably counterfeit from China and Hong-Kong, and, the notorious TAOBAO (Aliexpress).
Just don't trust EOL (End of Life) things from China, though I know sometimes maybe they works.
I know the "China counterfeit industry" very well. They can make anything you want. I ever pretend to be a powerful buyer, and I asked them to produced faked MUSES02 OPamps.
They replied that the cost is about 0.5USD/pcs. If you can pay 1USD/pcs, they could guarantee the electrical performance of the faked OP, at least it would work and makes sounds.
Few days later, they sent me samples of the faked MUSES02 OP. You just can't tell the difference. As a buyer, you can specify the totem, date codes on the surface of OPamps, anything and whatever you want!
Eric ,
I'm planning to build the Telos Clone and I want to use the Exicon ESX10P/N20 fets .Is it needed to recalculate the Gate resistor ?