I have made a JFET/Bipolar "OPAMP" where it is possible to mount different parts and test them. I am going to build it in the next days with J113(low noise ~ 3nV@1KHz) and 2n5401/2n5551 (Fairly linear current gain).
There is nothing speciel about it. Singleside PCB wich is easy to make your self (Wide tracks).
Size of the board is 55 by 81 mm.
I know i can insert a image but how?
Sonny
There is nothing speciel about it. Singleside PCB wich is easy to make your self (Wide tracks).
Size of the board is 55 by 81 mm.
I know i can insert a image but how?
Sonny
Jfet/bipolar PCB and Schematic
Okay then i have to scan them. I will post it on monday .. i think.
It is mostly made for testing JFET's.
I can mount J201 - J204, J111 - j113 and if you twist the pin's even Dual Monolothic like U401 - u404.
I have both the U404 and the J113. The last one i have matched to IDSS difference of only 0.5% and 10mV difference in VGS @ ID = 4mA.
It is made as a OPAMP, so you have make the feedback loop outside the board if you want to do that
I think my CD-player is getting a 8 holes in the chassis! but it don't know it yet!
Sonny
Okay then i have to scan them. I will post it on monday .. i think.
It is mostly made for testing JFET's.
I can mount J201 - J204, J111 - j113 and if you twist the pin's even Dual Monolothic like U401 - u404.
I have both the U404 and the J113. The last one i have matched to IDSS difference of only 0.5% and 10mV difference in VGS @ ID = 4mA.
It is made as a OPAMP, so you have make the feedback loop outside the board if you want to do that
I think my CD-player is getting a 8 holes in the chassis!
but it don't know it yet!Sonny
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