sbelyo

Got it... Is an hFE of 300 good enough for this circuit?

the transistor tester measures hFE and Vf. What's are acceptable values for this circuit? How closely should I match the devices?

Funny you ask that... We can definitely add all those boards. I definitely want some of those rectifier boards myself. I was going to ask for help with the following: on the GRLV, I noticed there was an updated board. Has anyone double checked it, is it safe to produce? What is the current GRHV board? I know the tubed bal/unbal board has it's own that ranges from 100 to 250V so I'm guessing there's another. A fat one was mentioned so I wasn't sure if that was what everyone is looking for. I'll include the 100-250V board with the tubed unbal/bal board as a set if that works for everyone. Also, the circlotron power supply was requested so that would be a third PSU board. Please let me know if I'm correct on all of this

Sure, I added the TKD 4CP-601 10K to the sheet. I'll add the 2 and 4 channel versions of the CP2500 once I get a price. Does anyone want the 2 channel version of the cp601? Also, on the motorized 2 or 4 channel or both?

No minimum, but I’ll double check that Sent from my iPhone using Tapatalk

Sellmark is still active. I got an email from them this morning. The 4CP-601 10K is $50 a piece plus shipping. I asked for prices on the 2Cp and 4CP-2500 as well

Yikes... Sent from my iPhone using Tapatalk

Haven't received a response from Sellmark on the TKD attenuators so I contacted TKD to see what they say. Fingers crossed they'll sell direct

The one in that thread is 100-250V. Tinkerer wants the circlotron PSU, that one looks like it 500V. The ones that are mentioned above are kgsshvpssicfetsinglenewleftfatsw and kgsshvpssicfetsinglenewrightfatsw. Are those the current HV PSU boards? I just want to make sure I label the boards in the spreadsheet correctly

I haven't paid attention to the different versions lately. What version is the one posted in the tube unbal/bal board thread?

I remember Kevin posted something about pcx. They wanted a 100 piece minimum or something like that. I've got two email addresses for Sellmark. Going to try them both

I was going to contact sellmark. Last email I have from them is in 2016. Are there others? Sent from my iPhone using Tapatalk

I was reading through all that and was about to ask you... I'll use what you had before. What's the difference between the 2500 and 2511?

Spreadsheet is now open... Fill in your ID and amounts So far it's just the boards that have been mentioned above. Pay no attention to the copper and thickness for now, I'll adjust it. Feel free to post what you want here. I'll add a spot for TKD pots once I talk to the distributor. The Dynalo mini board uses 4CP-601 10K with audio taper. Does anyone want another model?

I’ll include any board you want. I just put the old spreadsheet up there so I didn’t lose it. I’ll edit it later today Sent from my iPhone using Tapatalk

noted... I wasn't going to attempt the regulators lol. Was going to use AMB regs for now.

The CFP2 is it Dynamic or electrostatic?

I'd be in for an alpha at this point

That first place had them both... Darn, guess I didn't search hard enough. I ordered 250 each of the B from arrow and a transistor tester off ebay. We'll see what kind of numbers I get.

I ordered BC546B\556B I couldn't find the C for both. Anybody see a problem with the B?

Hi All.. I accidentally deleted the old thread just now, whoops! Can everyone post the boards they want here in this thread as I start over. I'll also inquire about pots from TKD through a US distributor. This was the old spreadsheet https://docs.google.com/spreadsheets/d/1Z1L3MQuuY4ZTUyPQb1qBmVJp8MtC7qEzBUui3z5dFrQ/edit#gid=0 Attached are all the boards except the unbalanced to balanced tube bottom mount Bridge_Vert.zip cfp2hmt.zip circlotronhvpowersinglenewver3swt.zip goldenreference6d.zip grhv100v.zip kgbhver6sbipolar.zip kgsshvpssicfetsinglenewleftfatsws.zip kgsshvpssicfetsinglenewrightfatsws.zip TKD 4CP 3 pot final.zip THAT340- SOT23.zip that340.zip THAT340-J109-K389-JFET.zip that340lsk.zip SuperSymmetryDynalo-TDK-v1-5.zip ubaltoblatubeschem2.zip gg.zip kgsshvcarbonv6ground2.zip

I once placed an order with them a few years back and chose usps priority to save $3. When it didn't arrive 4 weeks later they refunded the order. I re-ordered with UPS and got the stuff a few days later. Fast forward 2 months a package from Mouser arrives with the original contents via USPS

I'm starting to think that I should use something else. I think it's better

With a 5V reference will the GRLV work with an output lower than 12Vdc?

for V+: ((R8 + R7) / R7) x 10 (reference voltage of D5 - LT1021-10) for V-: ((R9 + R10) / R10) x 10 (reference voltage of D7 - LT1021-10) If I use this calculation and all resistors are 1.5K like the silkscreen, then use a 5V reference I'd get 10V That'd work for me because I need 9-12 Vdc. Now I'll see what the xformer is putting out in the way of voltage. it's 10.96 Vac with no load so that should be fine pulling 9 - 9.25 Vdc @ 0.80 A right?