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Product Details
VELLEMAN MLP110 MadLab DIY ELECTRONIC KIT- Wonky Wire(solder version)
SKU: MLP110
Overview
Product Features:
The Wonky Wire is used to test the steadiness of your hand. It utilizes a circuit with an oscillator that has a very high oscillation frequency of about 3kHz (3000 cycles per second). As you try to trace the outline of the convoluted wire with the loop, the slightest touch will cause a tone to so sound. The variable resistor can be used to change the pitch of the tone.
Skill Level 2. This kit requires soldering of components to the PC board while building.
- This kit requires soldering of components to the PC board while building.
- Soldering required
- Ages 13+
Wonky Wire
The Wonky Wire circuit is based around the same oscillator that is used for the Flashing Lights. The timing components (R3/C1 and R2/C2), however, are much smaller and this produces a much higher oscillation frequency of about 3kHz (3000 cycles per second).
To hear the high-pitched tone a high-impedance piezo-electric speaker is used. Notice that the piezo is connected between the collectors of transistors TR1 and TR2. The collector voltage of TR1 oscillates between 0 and 9 volts, as does the collector voltage of TR2 but in the opposite way. This has the desirable effect of producing a voltage variation of 18 volts across the piezo making it sound much louder.
The Wonky Wire is used to test the steadiness of your hand. You can see from the circuit diagram below that when the wand touches the wire the oscillator is switched on and a tone is produced.
The variable resistor (VR1) can be used to change the pitch of the tone.
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Order Info
TOLL FREE: 800-379-6664
INTERNATIONAL:954-574-0345
SCHOOL PURCHASE ORDERS:
FAX: 954-574-9528
INTERNATIONAL ORDERS:
MONEY ORDER,WESTERN UNION, OR BANK WIRE
(NOT INCL. CANADA)
INTERNATIONAL:954-574-0345
SCHOOL PURCHASE ORDERS:
FAX: 954-574-9528
INTERNATIONAL ORDERS:
MONEY ORDER,WESTERN UNION, OR BANK WIRE
(NOT INCL. CANADA)
