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They merely modified it slightly , setting the bias permanent .
Sir
I mean what are they in the given circuit
Are they for bias adjustment?
I have posted this hoping that you will help me in knowing them
thank you
Hi apex, thanks for reply. i replaced bias resistor R16 (1k) with 1.8k, R 17 (220) with
470 ohm and analysed AX14 circuit with spice. now all nodes showing proper Voltages
and currents. expecting your technical explanation. thanks again.
470 ohm and analysed AX14 circuit with spice. now all nodes showing proper Voltages
and currents. expecting your technical explanation. thanks again.
No need to change value of R16 and R17, just change value of variable resistor P1 (0-1k) to get about 2,2V on Vbe multiplayer Q10 (BD139),
Regards
Hello Mile,
What is the purpose of R2 between the two base of IPS? I see it sometimes but never investigated that.
Regards
Laurent
R2 (22k) is not connect between two bases, it's connect to GND in series with R8 (560R),
Regards
![APEX%20NX14[1].jpg](/community/data/attachments/201/201310-2d44cfea3e9f631d5679dff432e12398.jpg?hash=LUTP6j6fYx)
Yes, there are two versions of NX14 pcbs in this thread, I suggest second version.
Attachments
sir mile,
i'm very sorry,i should review first the thread before asking,but thank you anyway,and is 4 pair possible with this N14?
i'm very sorry,i should review first the thread before asking,but thank you anyway,and is 4 pair possible with this N14?
This is HI-Fi amp for home use, if you want more powerful mosfet amplifier go to: http://www.diyaudio.com/forums/solid-state/162043-mosfet-amplifier-irfp240-irfp9240-43.html
Regards