Re: Re: âËÂ...áÅéǼÁ¨ÐËÒ¨Ò¡ä˹ÅèСêÒº...ÍÔÍÔÍÔ...½ÃÑè§ÍèÒ¹äÁèÍÍ¡
J fets do not work good! You have to parallel more J fets because of 20mA is too much for one. Even You are increasing the capacitances and de amplification is lower so it does't satisfy.
If You want to improve the Aleph-P then try a nagative powersupply and DC coupling for the input. It is possible to use Cascode cirquit between de drain and current sources to reduce miller effect and increase bandwidth. You have to keep a 20 Volts between source and drain at the IRF610, then it have its best performance (very important)
J fets do not work good! You have to parallel more J fets because of 20mA is too much for one. Even You are increasing the capacitances and de amplification is lower so it does't satisfy.
If You want to improve the Aleph-P then try a nagative powersupply and DC coupling for the input. It is possible to use Cascode cirquit between de drain and current sources to reduce miller effect and increase bandwidth. You have to keep a 20 Volts between source and drain at the IRF610, then it have its best performance (very important)
Hi,
If somebody has the artwork of these PCBs it would be very nice if he could send it to me at bbakota2000@yahoo.com. Thanks a lot.
If somebody has the artwork of these PCBs it would be very nice if he could send it to me at bbakota2000@yahoo.com. Thanks a lot.
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