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?
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:
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
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:
Attachments
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!
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.
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