All three can be both type.
hi guys im slowly getting into this project!I was wondering if this transformer would work for psu!http://www.antekinc.com/as-05t240-50va-240v-transformer/
So i just ordered everything and be very excited to start soon with this new project.There is just one thing i'm wondering about: The Mouser Boom holds a 0.3A fuse. The first Page mentions 0.1A and 0.2A. What do i need in Europe using this transformer. http://www.mouser.de/Search/ProductDetail.aspx?R=FS20-300virtualkey55310000virtualkey553-FS20-300Thx and GreetsLars
... i remember reading a document called the Pin 1 Problem in regard to driving different equipement on realted ground without having issue and the need of a ground lift very interesting article , i am really glad you made this point ,
The components for the PSU from this BOM ****MINUS THE CASE**** $95.38:https://www.mouser.com/ProjectManager/ProjectDetail.aspx?AccessID=b5c122b4d0
If it's your first build, you might want a cheap capsule and tube to use until the mic is done
For the plate cap, try out the search function at mouser. Use the search fields to narrow it down.
Personally I'd buy tubes from Bowie. I don't know if I trust most vacuum tube sites any more than Ebay. Not that they're trying to pull a fast one it's just that they're targeted toward Hi-fi and guitar amps, not microphones.Before I knew about Bowie I bought my EF86 here but they're sold out of the Silver Hilumen.
Still hoping for a bit of help here. I've complete my build and I'm having some issues at calibration.For a start I measured the PSU, mic not connected, and I get the following values:Heater = 22VACAC In 210 = 270VAC B+ = 227 DCH- = -17.77-----------Mic plugged in, no tube:B+ = 249H- = -17.660.9 Ohm between the mic body and the chassis of the PSU---------------Right after measuring my PSU gave out. It kept blowing fuses and the last fuse I put in I could smell a bit of electrical burn.I took out the PCB and could see that D1, the 15 V 5W Zener diode has burnt out.What could the reason for this be? Cheers,Dennis
I'm in the process of doing all of the research for this build. I have some issues with reading so... parsing a 59 page thread is a little daunting. I'm wondering if anyone who has recently done this build can help me out? Here's my understanding of what I need:All 5 items from the PCB-D-67 kit from this page $89:http://www.vintagemicrophonepcbkit.com/orders.htmlThis mic body kit from Studio 939 (SYT-5 Gen 3) $145:http://store.studio939.com/product/syt-5-microphone-body-kitThe components for the microphone from this BOM $45.05:https://www.mouser.com/ProjectManager/ProjectDetail.aspx?AccessID=83ad963d23Now, here's the first problem, the Vishay 0.47uF cap is obsolete. None of the equivalent options are in the same package. What is everyone using for that? I've narrowed the field down in the following link. Looks like the Wima and the Nichicon caps are the closest matches but neither are the same form as the Vishay. Will they work in this build? The Wima doesn't even have bendable leads... could solder some leads to it but... still, tight spaces etc. What is everyone else doing? http://www.mouser.com/Passive-Components/Capacitors/Film-Capacitors/_/N-9x371Zscv7?P=1ywtgmbZ1yznbzsZ1z0wquaZ1yzs9nv&FS=TrueThe components for the PSU from this BOM ****MINUS THE CASE**** $95.38:https://www.mouser.com/ProjectManager/ProjectDetail.aspx?AccessID=b5c122b4d0This case from Collective Cases $65:http://collectivecases.com/?product=psu-casesAn HK67 Capsule from Heiserman Audio $250:http://www.heisermanaudio.com/store/p4/Heiserman_HK67_Capsule.htmlAMI T67 Transformer from Zen Pro Audio $110:http://www.zenproaudio.com/tab-funkenwerk-ami-t67-transformerAmerpex EF86 Tube $99.95:https://tubedepot.com/products/amperex-ef86-6267Total cost: $899.37 (plus some shipping charges I'm sure)Is there anything I'm missing?
Is there any science behind determining which of those would sound the best or does it come down to trying it in the circuit and hearing how it sounds?