1 (177)

1 - BC 547 transistor

1    - PN 3563 RF transistor

2    - 1N4148 diodes

1 -13t enamelled wire 3mrn dia coil 1 - 15t enamelled wire 3mm dia coil 1 - 12v lighter battery 1 - 25cm enamelled wire

1    - SPDT mini slide switch

2    - paper elips

1 - FIELD STRENGTH METER PCB

Extras:

1 - multimeter (0v -10v rangę)

CONSTRUCTION

Ali the components, including the 12volt lighter battery and switch, mount on the PC board. The legend on th* where each part is placed arid we have found it important to avoid over-heating the diodes and transistors as performance and cause the Circuit to become very insensitive. Follow the overlay on the PC board to see whe placed. The coils are pre-wound in the kit and are wound on a 3mm diameter Philips screwdriver (if you are nr and the wire size is not critical as they simply form a broad-band trap.

The anten na wire is enamelled to prevent it touching the active components of the bug you are testing.

	3P	\]	rJ
BC547	2N2222	e b c PN2222A PN 3563
TRANSISTOR PINOUTS

mk:@MSITStore:F:\spy circuits.chm::/SpyCircuits-l.html

Wyszukiwarka

Podobne podstrony:
1 (184) Spy Circuits Strona 45 z 46 BC547 2N2222 e b c PN2222A PN 3563 TRANSISTOR
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 (164) Spy Circuits Strona 25 z 46 10p 166R 22p 75R 47 p 35R 1n 1R6 22n much less
1 (174) Spy Circuits Strona 35 z 46 A close-up of the Field Strength Meter Mkl connected to a multim
1 (175) Spy Circuits Strona 36 z 46 Field Strength Meter Mkl Circuit. A 2N2222A transistor can be us
1 (142) Strona 3 z 46 Spy Circuits pulse is amplified by the transistor and the Circuit is kept acti
1 (143) Spy Circuits Strona 4 z 46 illuminate. So far we have seen an unstable Circuit in action. Pi
1 (146) Spy Circuits Strona 7 z 46 The finished bug with "studs" for the battery and a cut
1 (148) Spy Circuits Strona 9 z 46 Antenna The emitter resistor is too Iow Inductor is 6 tums of wir
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 (181) Strona 42 z 46 Spy Circuits coil. Ali the othertransmitters have sufficient output to detect
1 (141) Strona 2 z 46 Spy Circuits These circuits are very powerful, in that they are very hard to d
1 (147) Strona 8 z 46 Spy CircuitsAN IMPROVED DESIGN This design uses a "sług tuned coil"
1 (149) Strona 10 z 46 Spy Circuits2 TRANSISTOR CIRCUITS The next progressive step is to add a trans
1 (150) Strona 11 z 46 Spy Circuits magnetic field" and this occurs when the coil collapses and

więcej podobnych podstron