1 (146)
Spy Circuits
Strona 7 z 46
The finished bug with "studs" for the battery and a cut-out for the air trimmer
A PNP DESIGN
Before we go to an improved design, here is an unusua! Circuit using a PNP (BC 557) transistor. Firstly, PNP 1 work as well as NPN transistors. I would reverse the 4k7 and eiectret mic as the voltage between base and 0\» and the 4k7 is not biasing the transistor - it is not needed! The rangę will be 50 to 100 metres and the current
Simple 1 transistor FM Transmitter
The 22n is not shown. This is a later addition.
2011-12-08
mk:@MSITStore:F:\spy circuits.chm::/SpyCircuits-l.html
Wyszukiwarka
Podobne podstrony:
1 (148) Spy Circuits Strona 9 z 46 Antenna The emitter resistor is too Iow Inductor is 6 tums of wir
1 (143) Spy Circuits Strona 4 z 46 illuminate. So far we have seen an unstable Circuit in action. Pi
1 (181) Strona 42 z 46 Spy Circuits coil. Ali the othertransmitters have sufficient output to detect
1 (152) Spy Circuits Strona 13 z 46 See the layout below: Faults with this Circuit: 1. Load resistor
1 (158) Spy Circuits Strona 19 z 46 /Antenna I 165cm A PNP in the buffer is not a good performer6. W
1 (159) Strona 20 z 46 Spy Circuits8. CLASS "C" OUTPUT The following Circuit uses no biasi
1 (174) Spy Circuits Strona 35 z 46 A close-up of the Field Strength Meter Mkl connected to a multim
1 (176) Strona 37 z 46 Spy Circuits junction of the DC amplifier transistor only allowing ,6v to app
1 (140) Spy Circuits Strona 1 z 46by Colin Mitchell ITallltoti Notę: Ali the circuits described in t
1 (153) Spy Circuits Strona 14 z 46The Circuit on proto-typing board - a quick way to build a projec
1 (156) Spy Circuits Strona 17 z 46Use an RF transistor for the Buffer3. MORĘ RANGĘ Morę output can
1 (164) Spy Circuits Strona 25 z 46 10p 166R 22p 75R 47 p 35R 1n 1R6 22n much less
1 (175) Spy Circuits Strona 36 z 46 Field Strength Meter Mkl Circuit. A 2N2222A transistor can be us
1 (177) Spy Circuits Strona 38 z 46 1 - BC 547 transistor 1 - PN 3563 RF transisto
1 (184) Spy Circuits Strona 45 z 46 BC547 2N2222 e b c PN2222A PN 3563 TRANSISTOR
1 (183) Spy CircuitsStrona 44 z 46 Field Strength Meter Mk II KitPARTS LIST 1-100R 1 -330R 1 -4
Creative Doughcraft0 DOUGHCRAFT To make the wings, roli out some dough and cut out two leaves
09 8 Sun and Showers Reproduce the patterns on this page and page 10. Color and cut out on the heavy
więcej podobnych podstron