Hi, do you actually make this pcb's?Simple Full Complementary Simetry +/-80V. Voltage amplifier/driver biased with 30mA. This driver circuit stabilized BIAS in output stage. Exelent stability without oscilation, hum and noise, sound great.
RMS Power: 240W 8ohm, 350W 4ohm
And if so, would you sale them?
Hi,
I have few questions about this design:
If I want more or less power i just need to add or remove amplification degree(i'm not sure how it is really named in English.. ) of mosfets?
How can I calculate needed power supply voltage for this amplifier if I remove or add another pair of mosfets?
I have few questions about this design:
If I want more or less power i just need to add or remove amplification degree(i'm not sure how it is really named in English.. ) of mosfets?
How can I calculate needed power supply voltage for this amplifier if I remove or add another pair of mosfets?
It is going to be something like this:
Nice work, that will be valuable amplifier, thanks for shareing.
Regards
some more pictures...
Heh,THANK YOU for sharing all this with us!
One thing must be considered,and that is if anyone uses *2N5401/5501 MJE340/350* than must be careful with pin-placements because the pcb was made for *2SA-2SC* combination with BC639/640. BC327-337 that replaces BC639-640 also has a different pin-placement,so be aware...
Some pictures from tonight:
Nice work, that will be valuable amplifier, thanks for shareing.
Regards
Heh,THANK YOU for sharing all this with us!
One thing must be considered,and that is if anyone uses *2N5401/5501 MJE340/350* than must be careful with pin-placements because the pcb was made for *2SA-2SC* combination with BC639/640. BC327-337 that replaces BC639-640 also has a different pin-placement,so be aware...
Some pictures from tonight:
Attachments
Power Amplifier
So, do you have this for sale? fully populated or bare pcb's?Circuit diagram work good even in PA amplifiers. I made over 120 PCBs in last 5 years. Beginer with basic expirience in DIY can easy made this amp. Usefull not only for hobby.
today...
Did something today,here are some videos
APEX HV23 uradio/done by 44250 I. - YouTube
APEX HV23 uradio/done by 44250 II. - YouTube
pictures before and after mounting on a heatsinks:
Did something today,here are some videos
APEX HV23 uradio/done by 44250 I. - YouTube
APEX HV23 uradio/done by 44250 II. - YouTube
pictures before and after mounting on a heatsinks:
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Ho hoo,i ovde te ima!
Ho hoo,you are here too!
Thank you my friend,i hope for more amp´s - some from me - and some from you!
Perfectly done!
Ho hoo,you are here too!
Thank you my friend,i hope for more amp´s - some from me - and some from you!
It actually sounded clear all the time at all volume stages.
Now i see that microphone on camera has eaten most of high sounds and that was happening when the amplifier was at loud,when i lowered volume the microphone was able to pick up sound pretty well. Nothing strange,all that sound in a 40 square meters... First time when i get a chance to use it on an open field i will record a new video and than it will be possible to see that the amp does not wreck high sounds. It sounded clear all the time at all volume stages.
Now i see that microphone on camera has eaten most of high sounds and that was happening when the amplifier was at loud,when i lowered volume the microphone was able to pick up sound pretty well. Nothing strange,all that sound in a 40 square meters... First time when i get a chance to use it on an open field i will record a new video and than it will be possible to see that the amp does not wreck high sounds. It sounded clear all the time at all volume stages.
Last edited:
APEX HV23 done by 44250 in action.
APEX HV23 uradio/done by 44250 III. - YouTube
APEX HV23 uradio/done by 44250 III. - YouTube
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