Hi all!
I need a good schematic for preamplifier with BS170. Premp to have an input resistance of 1MOhm and gain up to 8x. 🙁
thank you
I need a good schematic for preamplifier with BS170. Premp to have an input resistance of 1MOhm and gain up to 8x. 🙁
thank you
look for recent Juma's posts
Yes, that circuit works well with many mosfets. I have BS170 and K1336 small mosfets but couldn't find Spice model for them. But the standard IRF610 works well with the circuit.
So, you are looking for a circuit for a use you don't describe with parameters that may be impractical because you already have a 19 cent transistor?
What is it you are actually looking to do? Ideas will flow to you in great profusion.
Or spend 30 cents on an Ne553x.
What is it you are actually looking to do? Ideas will flow to you in great profusion.
Or spend 30 cents on an Ne553x.
HiSo, you are looking for a circuit for a use you don't describe with parameters that may be impractical because you already have a 19 cent transistor?
What is it you are actually looking to do? Ideas will flow to you in great profusion.
Or spend 30 cents on an Ne553x.
Schematic need to pre-amp for Guitar ceramic-pickups with reinforcements to 10x and the input resistance of 1Mohm
thank you
Hi
Schematic need to pre-amp for Guitar ceramic-pickups with reinforcements to 10x and the input resistance of 1Mohm
thank you
Here you are:
You'll get the component's values when you write your real location in the profile and put the real flag of your country... 😉
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Hi juma!Here you are:
You'll get the component's values when you write your real location in the profile and put the real flag of your country... 😉

Ala, are not good ... I need the preamplifier JFET N-channel BS170, but with symmetrical power supply Ucc=+/-9V.
P.S.
What flag "batali", because we did not qualify for the Olympics in handball in London.
Otherwise you can send to schematic my i-mail.
thank you and cheers!

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BS170 is a MOSFET.
If you mean 2SK170 (which happens to be a JFET) you might consider JBOZ circuit (with minor adjustments for +/- 9V PS).
The thing about the flag and location stays...
If you mean 2SK170 (which happens to be a JFET) you might consider JBOZ circuit (with minor adjustments for +/- 9V PS).
The thing about the flag and location stays...
I thought the mistake 2sk170BS170 is a MOSFET.
If you mean 2SK170 (which happens to be a JFET) you might consider JBOZ circuit (with minor adjustments for +/- 9V PS).
The thing about the flag and location stays...
P.S.
For the residence is an open question,...
Will someone help in any schematic with mosfet ?🙁😕
Pream means that there are gain up to 10x and input resistance of 1MOhm.
thank you!
Pream means that there are gain up to 10x and input resistance of 1MOhm.
thank you!
Last edited:
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