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50M amplifier 25.11.22 22:42 |
Registriert - Registered: 5 Jahre - Years Einträge - Posts: 70 |
Hello to all .
I am working on a 50M amplifier and the mpf970 is defective.
Now I have found and ordered a replacement j-fet J174.
meanwhile it arrived.
Now I can find the pinout of the j174, but not of the mpf970.
Can the j174 be replaced directly 1 on 1? .
If I saw correctly, the source drain and gate is different, namely j174 pin 1 = drain pin 2 = gate and pin3 is source .
The source and gate of the mpf970 are reversed, is this correct?
I doubt because I don't want to make a mistake since they are not easy to get.
Anyone have experience with the 50m amp?? please let me know .
regards nik
I am working on a 50M amplifier and the mpf970 is defective.
Now I have found and ordered a replacement j-fet J174.
meanwhile it arrived.
Now I can find the pinout of the j174, but not of the mpf970.
Can the j174 be replaced directly 1 on 1? .
If I saw correctly, the source drain and gate is different, namely j174 pin 1 = drain pin 2 = gate and pin3 is source .
The source and gate of the mpf970 are reversed, is this correct?
I doubt because I don't want to make a mistake since they are not easy to get.
Anyone have experience with the 50m amp?? please let me know .
regards nik
Re: 50M amplifier 26.11.22 08:18 |
Registriert - Registered: 18 Jahre - Years Einträge - Posts: 3.949 |
Frga sonst mal bei Strixner und Holzinger ob die noch nen Originalen MPF970 auftreiben können .
Re: 50M amplifier 26.11.22 15:55 |
Registriert - Registered: 10 Jahre - Years Einträge - Posts: 479 |
Hello Nik,
Source and Gate are swapped, that's correct! A datasheet can be found here: [www.google.com]
Regards
Jens
Source and Gate are swapped, that's correct! A datasheet can be found here: [www.google.com]
Regards
Jens
Re: 50M amplifier 26.11.22 16:35 |
Registriert - Registered: 5 Jahre - Years Einträge - Posts: 70 |
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