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The system of using this circuit is positioning a little magnet close to the stalk switch SW1 while being connected to the hand or garments of the individual holding the sack with the use of a tiny cable. Since the circuit is tiny, it can be put in a tiny plastic box. The magnetic field will definitely loose its contact with the splint change the moment the bag is snatched instantly. The circuit will definitely start oscillating if SW1 starts and will certainly produce a loud alarm sound from the loudspeaker. Alternatively, the unit can be placed in a pocket while the cable is linked to the bag, to develop a reverse approach of connection.

The high efficiency oscillator is made up by electrical wiring a corresponding transistor-pair that will definitely drive a small 8 Ohm loudspeaker directly. A very compact assembly is the result of 3 V electric battery quantity B1 and reasonable count of parts made use of.

Any kind of loudspeaker can be made use of yet the measurement is directed by the box where it will be positioned. Considering that the standby current being drawn is less than 20 uA, it is not required to include an ON/OFF switch. A existing of around ONE HUNDRED mA is consumed by the circuit when the alarm system is sounding. To make the circuit a lot more appealing, a 3.5 mm mono jack can be made use of as substitute for the switch while a 3.55 mm mono jack plug with its interior leads shorted can be made use of in place of the magnet. The tiny cable will certainly be connected to the jack plug. The voltage used to provide this circuit should not go over 4.5 V since the transistor Q2 could acquire ruined. To be on the risk-free side, it is suggested to utilize a 3 V supply with two AA cells wired in series.

The personal alerts are one of the fastest growing portions in the self protection sector today because they are exceptionally loud as well as beneficial to hold. It could be available in the kind of essential chains, rich torches, levered hook, or hand band. It is utilized for scaring off an attacker by unexpected them with high pitch alarm that may attract attention of others in the spot. The opening of a window or doorway may give a signaling procedure utilizing this gadget which can be done by putting the box on the frame as well as the magnetic field on the transferable part. In this way, the splint switch as well as the magnetic field will definitely be extremely close when the window or doorway is closed.

This is a small, portable set, designed for those aiming at look improvement. The Bio-Stimulator provides muscles stimulation and invigoration but, mainly, it could be an aid in removing cellulite. Tape the electrodes to the skin at both ends of the chosen muscle and rotate P1 knob slowly until a light itch sensation is perceived. Each session should last about 30 - 40 minutes. Circuit diagram :

• P1-----4K7 Linear Potentiometer
• R1-----180K   1/4W Resistor
• R2-----1K8  1/4W Resistor (see Notes)
• R3-----2K2  1/4W Resistor
• R4-----100R   1/4W Resistor
• C1-----100nF  63V Polyester Capacitor
• C2-----100µF  25V Electrolytic Capacitor
• D1-----LED  Red 5mm.
• D2-----1N4007  1000V 1A Diode
• Q1,Q2-----BC327  45V 800mA PNP Transistors
• IC1-----7555 or TS555CN CMos Timer IC
• T1-----220V Primary, 12V Secondary 1.2VA Mains transformer (see Notes)
• SW1-----SPST Switch (Ganged with P1)
• B1-----3V Battery (two 1.5V AA or AAA cells in series etc.)

• T1 is a small mains transformer 220 to 12V @ 100 or 150mA. It must be reverse connected i.e. the 12V secondary winding across Q2 Collector and negative ground, and the 220V primary winding to output electrodes.
• Output voltage is about 60V positive and 150V negative but output current is so small that there is no electric-shock danger.
• In any case P1 should be operated by the "patient", starting with the knob fully counter-clockwise, then rotating it slowly clockwise until the LED starts to illuminate. Stop rotating the knob when a light itch sensation is perceived.
  Best knob position is usually near the center of its range.
• In some cases a greater pulse duration can be more effective in cellulite treatment. Try changing R2 to 5K6 or 10K maximum: stronger pulses will be easily perceived and the LED will shine more brightly.
• Electrodes can be obtained by small metal plates connected to the output of the circuit via usual electric wire and can be taped to the skin. In some cases, moistening them with little water has proven useful.
• SW1 should be ganged to P1 to avoid abrupt voltage peaks on the "patients" body at switch-on, but a stand alone SPST switch will work quite well, provided you remember to set P1 knob fully counter-clockwise at switch-on.
• Current drawing of this circuit is about 1mA @ 3V DC.
• Some commercial sets have four, six or eight output electrodes. To obtain this you can retain the part of the circuit comprising IC1, R1, R2, C1, C2, SW1 and B1. Other parts in the diagram (i.e. P1, R3, R4, D1, D2, Q2 & T1) can be doubled, trebled or quadrupled. Added potentiometers and R3 series resistors must be wired in parallel and all connected across Emitter of Q1 and positive supply.
• Commercial sets have frequently a built-in 30 minutes timer. For this purpose you can use the Timed Beeper the Bedside Lamp Timer or the Jogging Timer circuits available on this Website, adjusting the timing components to suit your needs.