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Offline Eugene52Topic starter
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« Reply #40 on: August 13, 2009, 11:02:32 pm »
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Quote:Posted by masons21
i have problems with lf357 in latvia can i replace it with somting pls help


Hello masons21 . LM357 is a JFET input op amp . The substitute is a TL081

Regards......Eugene

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« Reply #41 on: August 14, 2009, 01:01:25 am »
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do i need some measuring devices to start delta pulse

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« Reply #42 on: August 14, 2009, 06:12:26 am »
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when i buy microshemes there are dip and so wich i need

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« Reply #43 on: August 14, 2009, 06:42:10 am »
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masons21;

You might also try a TL071, if you can not get the 81, its not as good, and in the worst case, try an LM741 / NE741, its very common but is slightly noisy and no jfet input, but what ever works, works!

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« Reply #44 on: August 16, 2009, 09:38:22 am »
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in my sheme are 2N3094 and 2N tranzistor tipes can i use bc tanzistors

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Offline Eugene52Topic starter
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« Reply #45 on: August 16, 2009, 11:42:30 am »
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Quote:Posted by masons21
in my sheme are 2N3094 and 2N tranzistor tipes can i use bc tanzistors



Hello Masons . General purpose NPN Fairchild 2N3094 = BC546 .  2N3094 and 2N3096 are almost obsolete .  Shocked
HH.........Eugene

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« Reply #46 on: August 17, 2009, 01:36:16 am »
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masons21;

Any transistor equivalent to the 2N type, called for, is  good.

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« Reply #47 on: September 10, 2009, 12:20:35 pm »
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hi
simple side pcb for delta pulse if you need it  Wink

br!

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pcb single side.zip

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Offline Eugene52Topic starter
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« Reply #48 on: September 10, 2009, 01:10:45 pm »
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Quote:Posted by electrosoft
hi
simple side pcb for delta pulse if you need it  Wink

br!


Thank-You for posting the attachments Electrosoft !!
HH........Eugene

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« Reply #49 on: October 05, 2009, 02:05:23 am »
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Does Sniffer have another head (coil) for bigger targets ?

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