As we have already published many tricks, games and unique project in this website. Now, here is a simple electronics trick project window charger. This project can be used in window so called window charger in order to keep intruders, thief etc. away by producing current are strong to threaten intruder and thieves.

Circuit Description of window charger

The heart of window charger is IC CD4047 (IC₁), used as free-running astable multivibrator. Here transistor is used as push-pull amplifier. Transistor T₁ and T₂ is connected to square wave output pin 11 and 10 of ic₁ respectively and it drives the push pull amplifier. The power transistor T₃ and T₄ follows the astable multivibrator and is connected to primary coil of transformer X₁. The output of transformer X₁ is rectified by diode D₁ and filtered by capacitor C₃. The filtered output from window charger is given to frame of window must be made from conductive metal. In this way we can keep thief, intruders away.

PARTS LIST

Resistors (all ¼-watt, ± 5% Carbon)

R₁, R₂, R₃, R₄= 470 KΩ

R₅, R₆ = 220 Ω

VR₁ = 220 KΩ

Capacitors

C₁ = 0.1 µF

C₂ = 470 µF/25V

C₃ = 0.47 µF/400V

Semiconductors

IC₁ = CD4047

T₁, T­₂ = BEL187

T₃, T₄ = BD139

D₁ = 1N4007

Miscellaneous

X₁ = 230V AC primary to 9V-0-9V, 500mA secondary transformer

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