[sdiy] Re: EML Sample & Hold Circuit

[Plutonique9]

Ok, I've allready done a bit of sleuth john b myself (that is 
investigating), I've come up with this so far;

MPS-A20->2n3904
MPS-A70->2n4403 or BC327

E112->J112 (with different pin setup)
This is a N-channel FET, unfortunatley i don't have any source for 
these, I wonder if other N-Channel FETS would do the job, would any 
of these substitute quite fine? MPF102, 2n5245, 2n5484, 2n5486?

E202->J202 (I guess with different pins as well)
This guy is another N-channel Junction FET, seems exactly like the 
E112, why do they make these things difficult :)

It seems that both these FET's are RF amps, I assuming that this 
matches up with the description of those parts I metioned i have 
access to;

N-Ch Junction RF-VHF Amp

If so, I'm rollin' on easy street in my pimped out cadillac.

Hope this goes somewhere
Seeya


On Mon, 2 Apr 2001 03:52:14 GMT, Plutonique9 wrote:
>I was going over the EML-101 schematics, and I was a little
>interested in trying to clone the sample and hold circuit. It seems
>quite basic, made discreetly out of transistors and FETS, though I'm
>having trouble working out what some of these transistors are,
>hopefully so I can rebuild it with common parts. Excluding the clock
>circuitry (I just want a trigger input), it uses 4 transistors and 2
>FETS, then just resistors, caps and a diode, easy, yes indeed, thats
>why she seems inviting to build. These are the parts I'm unsure
>about, and what would make a valid replacement;
>
>FETS::
>
>E112
>E202
>
>Transistors::
>
>A20
>A70
>
>I don't have a scanner, but I took two shots of the schematic (which
>covers it all) with a digital camera. If anyone would like me to
>send
>them the pictures, maybe they could redraw it and make it available
>on their site, any takers?
>
>Seeya
>
>
>
>-- Plutonique9, Plutonique9 at symbiocom.com
>
>http://www.mp3.com/Plutonique9


-- Plutonique9, Plutonique9 at symbiocom.com

http://www.mp3.com/Plutonique9