I will be getting extra boards done, just because they're so cheap! Happy to share these extras as payment for the great work done by the contributors.
Watch this space.....
Sent from my SM-T800 using Tapatalk
Watch this space.....
Sent from my SM-T800 using Tapatalk
Sure,you can expect a new listening report in stereo mode this time.(not dual mono unfortunately).
Why boys?
Etching your own pcb is so simple if you are using photoresist boards.
I will post again detailed guide.
Now,here is this singing second channel,keeping empty positions for D8 C9 and a link in position of R19.
Prasi,i used the 1st ver.bords.
I don't know is the 2nd version. has improved for extra space between feedback capacitor and input capacitor.
Attachments
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i use photo resist only, but seem to do something wrong in exposure to sunlight, either under or over. yes a guide would be nice.
yes, second version (ver3), has improved space and clearances and silk.
reg
prasi
exposure to sunlight
No my friend,this isn't the right way!
100 UV leds from EBAY is what i use,a photocopy in black&white (transpery) is the film then the solution of 9g. ΚΟΗ in 1 lit.water for fixing and then the etching solution
I think many of us want to use the photocopy (Zerographic process) toner iron transfer method for mask, then H2O2 and HCl mix to etch. 😀
Best way, but slow is to use an online PCB maker from China, $10 for 10 boards. Takes 3 weeks for delivery though.
Best way, but slow is to use an online PCB maker from China, $10 for 10 boards. Takes 3 weeks for delivery though.
I have used seeedstudio (actually from Singapore) for all my boards so far.
5cm x 5cm boards for $10, 10cm x 10cm (max) boards for $22 here, shipping is about $4:
https://www.seeedstudio.com/fusion_pcb.html
10cm x 10cm (max) boards for $10 but shipping is only via DHL ($25) but you get it in 4 to 5 days. So good if you are in a hurry. I know others who really like pcbway. They are fast.
China PCB Prototype & Fabrication Manufacturer - PCB Prototype the Easy Way
who can wait?
A prototype is always hary for me.
BTW we,here in Greece can't use credit cards
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Yes Thimios, reduce the single resistor between collector and base on the Vbe multiplier. You are using 1k2 so bring it down to 820. You need to bring it down to 120mA where it will sing at its best!
That will bring down the quiescent a lot and give you more range.
Now how is that depth of image? (you can measure this with stereo binoculars).
Hugh
That will bring down the quiescent a lot and give you more range.
Now how is that depth of image? (you can measure this with stereo binoculars).
Hugh
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But you still need to use a card to fill up your PayPal account, right?
Or there is some other way of doing it?
No Valery,if you have an account to PayPal (where your credit card was connected)you never need use your credit card directly . Just pay via PayPal.It is safe,nobody can steal you money .
All these are out of usage now in Greece.
No credit cards,no PayPal......nothing!
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I've got a customer in India - he can't link his card to the account.
So, having zero on his account, he can't pay with PayPal.
Sounds kinda strange...
Hi Hugh,putting a second resistor(2K2) in parallel to 1K2 (result is 776R)I endet up with 0.042V on the emitter resistor(0.33R) when trimmer 1K is at max resistance,do you think that this new resistor must be even lower?
Probably those same fat cats are the ones who bankrupted the country. Is the term "Greek tycoon" now an oxymoron?