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Jfet BOZ
Jfet BOZ
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Old 11th February 2013, 12:12 AM   #1221
tinitus is offline tinitus  Europe
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Jfet BOZ
thanks !

at first it had so much overdrive, and it distorted way too easy
now it does not sound distorted at all
it can still be pushed into overdrive, but only very very mild...and really sweet
but I still have a stereo unity gain buffer with attenuation between this and my big solid state 150watt hifi poweramp, or else it gets too much

but I'm very happy with the 'small stuff' I have learned from this
a break, and then on to the next project
cheers
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Old 24th February 2013, 01:55 PM   #1222
Tyimo is offline Tyimo  Hungary
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Hi!
Is it possible to use this JBOZ as I/V converter for AD1865DAC?
If I remember well the gain of this amp: x16, +24dB?

Greets:
Tyimo
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Old 23rd May 2013, 06:10 AM   #1223
Hikari1 is offline Hikari1  United States
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I am attempting to point to point a jfet boz.

I forgot to order the 475 ohm resistors on the output. Can a higher or lower value be used here? I have some 1K's and 910ohms I could parrallel up I guess for about 450 ohms.

Thanks.
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Old 23rd May 2013, 06:20 AM   #1224
vdi_nenna is offline vdi_nenna  United States
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Quote:
Originally Posted by Hikari1 View Post
I am attempting to point to point a jfet boz.

I forgot to order the 475 ohm resistors on the output. Can a higher or lower value be used here? I have some 1K's and 910ohms I could parrallel up I guess for about 450 ohms.

Thanks.
Parallel a couple of 910s.
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Old 23rd May 2013, 07:10 AM   #1225
Hikari1 is offline Hikari1  United States
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I'll give that a shot. Making progress so far.
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Old 23rd May 2013, 09:43 AM   #1226
mhouston is offline mhouston  Australia
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Quote:
Originally Posted by Hikari1 View Post
I am attempting to point to point a jfet boz.

I forgot to order the 475 ohm resistors on the output. Can a higher or lower value be used here? I have some 1K's and 910ohms I could parrallel up I guess for about 450 ohms.

Thanks.
Mate just use 1k or anything close. The preamp probably loads into a minimum of a 10k load. 450ohms or 1k it really doesn't matter.
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Old 23rd May 2013, 09:52 AM   #1227
tinitus is offline tinitus  Europe
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Jfet BOZ
mine are 560ohm
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Old 23rd May 2013, 06:18 PM   #1228
Hikari1 is offline Hikari1  United States
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Almost done. I doubled up two 1K's for the output.

I plan on using batteries like the diagram attached. Probably wont use any PS caps or maybe 1,000 UF or so.

Question: Should I just run the Pot/RCA grounds to the copper ground "buss" in the middle of the caps?
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Old 23rd May 2013, 06:47 PM   #1229
Zen Mod is offline Zen Mod  Serbia
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Jfet BOZ
use anything between 22R and 1K

it's there as idiotproof level increasing part

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Old 23rd May 2013, 07:04 PM   #1230
merlin2069er is offline merlin2069er  Canada
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wow, those are big caps.
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