26
Spy Circuits hUp://w^,w.talkingeleclronics.coniprojects/Spy^/o20Circuit^Spv,Circui...
Do not use an etched coil
A PNP DESIGN
Before we go to an improved design, here is an unusual Circuit using a PNP (BC 557) transistor. Firstly, PNP transistors do not work as well as NPN transistors. I would reverse the 4k7 and ełectret mic as the voltage between base and 0v raił is very smali and the 4k7 is not biasing the transistor. The rangę will be 50 to 100 metres and the current is about 3mA.
5 z I4
2008-11-17 2012
Wyszukiwarka
Podobne podstrony:
APC 13 09 02# 44 2 3d We do not use a/an: ♦ with uncountable nouns or plural countable noun
26 Spy Circuits http ://v^,v.talkingelectronics.coin^projects/Spy^/o20Circuit& SpyCircui..P1 P2
26 i regionalnego funduszu rozwoju. Oczekuje się, że proces, przyczyni się do stopniowej zmiany sto
27 Spy Circuits http/Aywy.talkingeleclronics.coniprojecls/Spy^^OCircuit^SpjCircui..AN IMPRON/ED
20 Spy Circuits hUp:/Avww.talkingdectromcs.convprojects/Spy%2C£ircuit& SpyCircui. W Antenna 16
24 Spy Circuits hUp:/Avww.talkingdectromcs.convprojects/Spy%20Circuits/SpyCircui.The Circuit on pro
27 Spy Circuits hUp:/Avwv.talkingdectromcs.convprojects/Spy%2C£ircuits/SpyCircui. This is the case
28 Spy Circuits hUp:/Avww.talkingdectromcs.convprojects/Spy%2C£ircuit& SpyCircui.BC547 is not s
20 Spy Circuits hUp:/Avww.talkingelectn>nicSwCom/prajects/Spy%20Circuits/SpyCircui... 6 turns 3m
21 Spy Circuits hUp://www.talkingdectronic&com/projects/Spy%20Circuits/SpyCircui..9. ADJUSTABLE
22 Spy Circuits hUp://v ^rv.talkingeleclronics.comprojecLs/Sp>rf/o20Circuit^ Spv,Circui... shouł
22 Spy Circuits http ://v^,v.talkingelectronics.coin^projects/Spy^/o20Circuit& SpyCircui..P1 P2
24 Spy Circuits http://wm.talkingelectromcs.com/prqects/Spy%20Circuits/SpyC ircui into the base of
25 Spy Circuits http://iwv. talkingelectronics.com projecU.Spy%20Circuits/SpyCircui The photo below
28 Spy Circuits http //uwy.talkingeleclronics.comprojects/Spy^^OCircuit^SpjCircui... Spy Circuits h
23 Spy Circuits http://vwv.talkingdectronics.com projects/Spy%20Circuits/SpyCircm
23 Spy Circuits http:/Avww.talkingelectromcs. conv projects/Spy4!
26 3J1HKTIPOHHOH y. " http://wwv hackersrussia.ru/Spy/Radiomc/rml 3.php Engksh version « f «
23 Spy Circuits http://vwwtalkingelectronics.comprojeclsSp>’<! o20Circuits. SpyCircui driftin
więcej podobnych podstron