User manual
Intended Use
The product is used to enable/disable a connected electrical load, using acoustic signals (e.g.
hand clapping). Before putting the kit into service, a complete build-up is necessary for which
soldering skills are required.
Always observe the safety instructions and all other information included in these operating
instructions. Please read the operating instructions carefully and do not discard them. If you
pass the product on to a third party, please hand over these operating instructions as well.
Any use other than that described above could lead to damage to this product and involves the
risk of short circuits, re, electric shock, etc.
This product complies with the applicable national and European requirements. All names of
companies and products are the trademarks of the respective owners. All rights reserved.
Package contents
• Assembly kit
• Operating instructions
Safety Instructions
Damages due to failure to follow these operating instructions will void the
warranty/guarantee! We do not assume any liability for any resulting damage!
We do not assume any liability for material and personal damage caused by
improper use or non-compliance with the safety instructions! The warranty/
guarantee will be void in such cases!
•
For safety and approval (CE) reasons, unauthorised conversion and/or modication
of the product are not permitted. Follow the mounting instructions.
• The product is not a toy and it should be kept out of the reach of children.
• The product must not become damp or wet.
• In order to avoid short-circuits and their consequences, the ready assembled kit
must be installed in a suitable enclosure.
• If you are not a qualied technician (e.g. electrician) with knowledge of the relevant
regulations (e.g. VDE), then you may only switch loads with an operating voltage
up to 24 V/DC (or 24 V/AC) and a current up to max. 2 A with the clapper switch.
Warning! Only a qualied electrician may connect the switch output to a
device operating with the mains voltage (230 V/AC, 50 Hz). Here the max.
permitted circuit power is 500 W.
Improper work carried out on the mains voltage endangers not only your
own life, but also the life of others! There is a risk of a life-threatening elec-
tric shock!
If you do not have the expertise required for the installation and the connec-
tion, do not install and connect it yourself but ask a qualied technician.
• Build the assembly only if you are sufciently skilled to perform the relevant solder-
ing tasks. For assembling use a suitable electronic soldering iron (small soldering
tip, max. heating power 50 W).
Improperly constructed kits are not covered by the warranty.
Functional Description
The task of the acoustic switch, often referred to as clapper or clap switch, is its response to
environmental noise, that is, activating a relay in reaction to loud noises. This could be clapping
hands, or also calling out loud or trampling, which would be sufcient to enable or turn off the
connected device.
General information on assembling the kit pieces
For the clapper switch to work after assembly, you must carry out the construction conscien-
tiously and carefully.
Double check each step and each solder joint twice before you are going to build the next
component! Adhere to the described building stage; do not skip any of the building stages! Tick
each item twice, once for building, once for testing.
In any case, take your time. Building an assembly kit is no piecework, because the time which you
are spending here is three times less of the time you would have to spend on troubleshooting
.
If the assembly is not functioning, an assembly error is often the cause, like components are
incorrectly installed such as ICs, diodes and electrolytic capacitors. It is also important to pay
attention to the coloured rings of the resistors, as have some slightly confusable ring colours. If
you cannot recognize the coloured rings clearly, measure the resistance with a suitable meter.
Observe of the proper capacitor values.
Also take into account that all IC pins (legs) are really seated in the socket. It happens easily that a
leg gets bent when you insert the IC pins. Just a little pressure, and the IC must almost automati-
cally enter the socket. If this is not the case, then most likely a pin is bent.
If the circuit board’s components assembly is all right, examine the board for “cold” solder
joints. These appear if either the solder joint was not heated up sufciently so that the soldering
tin does not have proper contact to the wires, or if during the cooling process the connection
is moved right at the moment of solidication. Such mistakes can often be spotted by the matt
appearance of the soldering joint’s surface. A corrective measure would be to reheat the solder
joint in a proper way.
Building the assembly
a) Resistors
First, the angularly bent resistors are inserted into the corresponding holes (acc. to component
diagram). Then bend the wires of the resistors by ca. 45° apart, so that they do not fall out when
you turn the circuit board. Solder the resistors on the back carefully to the conductor tracks.
Now cut off the projecting wires with a suitable electronic side cutter.
The resistors used here in this kit are carbon lm resistors. These have a tolerance of 5% and are
marked by a gold coloured “tolerance ring”
.
Normally carbon lm resistors have four coloured rings. Hold the resistor in such a way that the
gold-coloured tolerance ring is located to the right of the resistor’s body to be able to read the
resistor’s colour code. The coloured rings are then read from left to right.
If you cannot see the coloured rings clearly, we recommend that you use an ap-
propriate meter to determine the resistance value. However, do not touch the two
pins of the resistor with your ngers (especially in case of high-resistance) during the
measuring procedure, because skin resistance will alter the reading.
R1 = 10 kΩ brown / black / orange
R2 = 470 kΩ yellow / purple / yellow
R3 = 470 kΩ yellow / purple / yellow
R4 = 4.7 kΩ yellow / purple / red
R5 = 220 kΩ red / red / yellow
R6 = 100 kΩ brown / black / yellow
R7 = 1 MΩ brown / black / green
R8 = 1 kΩ brown / black / red
R9 = 680Ω blue / grey / brown
R10 = 10 kΩ brown / black / orange
b) Diodes
Now the connecting wires of the diodes are bent at right angles correspondingly to the contact
spacing and inserted in the allocated holes (acc. to the component diagram). Ensure by all
means that the diodes are installed with the correct polarity, mind the location of the cathode
stroke.
Bend the wires of the diodes by ca. 45° apart, so that the components do not fall out when
you turn the circuit board. Solder the diode to the traces using a short soldering time and trim
excess wires.
D1 = 1N4148 Universal silicon diode
D2 = 1N4148 Universal silicon diode
D3 = ZPD 6.8 V = 6V8 Z-diode 6.8 Volt
D4 = 1N4148 Universal silicon diode
A K A K
A K
c) Transistor
During this operation, the transistor is installed according to the component diagram and sol-
dered on the side of the conductor trace.
Mind the location of the transistor; the housing outlines must match those on the component
diagram. Take the at side of the transistor package as a guide. On no account may the con-
necting legs intersect, also, the component should be soldered keeping a distance of ca. 5 mm
to the circuit board. Ensure a short soldering time, to avoid that the transistor gets damaged
by overheating.
T1 = BC547, 548, 549 A, B or C low-power transistor
E
B
C
~ 5 mm
G
O P E R A T I N G I N S T R U C T I O N S www.conrad.com
Clapper Switch with Condenser/
Capacitor Microphone
(Assembly Kit)
Item no. 193135
Version 11/14