Conrad Course material 10107 14 years and over 10107 Manual De Usuario
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10107
3 Examples
When setting up and changing the examples, always disconnect the battery first to prevent short circuit while plugging the components.
The battery should only be connected again after inspection of the entire circuit. Please also observe that you do not touch the resistor
legs – the setups are sometimes rather narrow.
In all examples, the pinboard setup is shown before the circuit is explained. The values of the resistors and capacitators and the LED
colours can be taken from the circuit diagram. For example, it states that R1 has a value of 820 k
Ω .
Preparation
Before setting up the examples, some preparation is required. You can cut and strip the wires to the right length in advance. The
examples require the following lengths:
11x 30 mm
7x 50 mm
5x 70 mm
The cut lines now need to be stripped for about 7–8 mm on either side. Use stripping pliers for a wire diameter of 0.6 mm for stripping.
If you do not have stripping wires at hand, you can also carefully nick the wires with a sharp knife all around and then pull off the
insulation.
3.1 Hot Wire
The hot wire is a very popular and simple game. You only need a piece of wire, a battery and a lamp or buzzer. In this example, it is a
light-emitting diode (LED) with dropping resistor. The game is about trying to follow a wire bent in any manner with a wire loop without
touching the wire.
If the bent wire is touched anyway, the LED will light up and you have to start over. The player who is able to complete the route fastest
without contact wins.
Fig. 11 shows the setup of the game on the pinboard. Before the game can be set up, a few preparations are required. The learning
package includes an insulated wire that must be stripped to establish a contact. For this, cut a piece of approx. 20 cm from the
insulated wire and strip about 5 cm at one end. Now hold the wire by the stripped end and pull off the remaining insulation with your
fingernails. The completely blank wire can now be bent in any manner and pushed into the corresponding holes of the pinboard. Now
the wire loop that the player will hold must be formed. For this, cut a 25 cm long piece from the insulated wire and strip about 7 mm on
one end. This end is later pushed into the pinboard. On the other end, about 4 cm must be stripped to bend a wire loop with a diameter
of 1 cm. To bend the wire loop, best place the insulated piece around a pencil for a round shape. Now you can push the components
into the pinboard in the corresponding positions. The battery should generally only be connected when all components have been
plugged in and you have checked the circuit again.
R1
R1
V1
V1
Fig. 11: Pinboard setup Hot Wire
Circuit Description
Generally, the wire loop with the bent wire is used as a switching contact that closes the circuit once the two wires touch. This lets
current flow and the LED lights up. An LED always must have a dropping resistor to limit the current through the light-emitting diode to
prevent its destruction.
current flow and the LED lights up. An LED always must have a dropping resistor to limit the current through the light-emitting diode to
prevent its destruction.
R1
R1
V1
V1
3,3k
3.3k
Rt
rt
V+
V+
Fig. 12: Circuit diagram Hot Wire