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Home › Magazines › 2006 › May › Electric Fence Energiser

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Electric Fence Energiser

Jolt capacity for 50 days

Published in issue 354, May 2006

Electric Fence Energiser
Are you bothered by stray cats and dogs prowling and digging in your garden? Or does your own pet require strong persuasion to stay within a restricted area? This electric fence generator may well be the answer to your problems. A simple generator built around a 555 timer and an old ignition coil are sufficient to build a suitable circuit at a small outlay.

Components

Relevant websites

Resistors

R1 = 15k

R2,R3 = 6k8

R4 = 1M

R5 = 390k

R6 = 470

R7 = 560

Capacitors

C1,C2 = 100µF 63V radial

C3 = 10nF

C4 = 1µF5 MKT, lead pitch 5mm or 7.5mm

C5 = 220nF 630V MKT, lead pitch 22.5 or 27.5mm, size 11x30 mm

C6,C8 = 100nF

C7 = 47µF 25V radial

Semiconductors

D1 = zener diode 10V 0.5W

D2,D3 = 1N4148

D4 = 1N4007

D5 = LED, low-current

D6 = 1N4002

T1 = IRFP460PBF (500 V/20 A, TO247AC), e.g., Digi-Key IRFP460PBF-ND

IC1 = TLC555CP (do not use NE555!)

Miscellaneous

K1-K4 = Fast-on (spade) connector, vertical, 2-way PCB mount

S1 = slide switch, PCB mount, 3 x changeover (2 poles, 3 positons), e.g., Conrad Electronics 708097-62

In-line fuse 4A T (slow) with holder

12-V ignition coil (w. length of spark plug cable)

1 wire link (next to D2)

PCB, ref. 050248-1 from The PCBShop

Click below to download a PDF copy of this article from Elektor magazine.

 

Downloads 
PDF Article (U060568.pdf)
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PCB layout (050248-PCB.pdf)
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Order from Elektor 
PCB, bare
050248-1
Please note. In view of the complexity of international markets, Elektor cannot guarantee the availability of components for this project.

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