Conrad Digital Thermometer Module With LED Display Kit 192147 Data Sheet
Product codes
192147
Thereafter, the excess wires are cut away.
Note that this circuit is equipped with two different types of resistors.
The commonly used resistors are the carbon film resistors. They have a tolerance of 5%
and are marked by a gold-coloured “tolerance ring”.
and are marked by a gold-coloured “tolerance ring”.
Carbon film resistors normally have four coloured rings.
Metal film resistors have a tolerance of just 1%. This is shown by a brown “tolerance
ring”, which is imprinted a little broader than the remaining four colour rings. This is
meant to avoid a confusion with a normal “value ring” having the value of “1”.
ring”, which is imprinted a little broader than the remaining four colour rings. This is
meant to avoid a confusion with a normal “value ring” having the value of “1”.
For reading the colour code the resistor is held in such a way that the coloured tolerance
ring is present to the right of the body of the resistor. The coloured rings are then read
from left to right!
ring is present to the right of the body of the resistor. The coloured rings are then read
from left to right!
R1 = 100 k
brown, black, yellow
R2 = 100 k
brown, black, black, orange
(metal film)
R3 = 470 k
yellow, violet, yellow
R4 = 680 R
blue, gray, brown
R5 = 1 M
brown, black, black, yellow
(metal film)
R6 = 100 k
brown, black, black, orange
(metal film)
R7 = 5,6 k
green, blue, black, brown
(metal film)
1.2 Diodes
Now, the connection wires of the diodes are bent at right angles conforming to the
contact spacing and inserted in the openings provided (as per the component diagram).
Always see to it here that the diodes are inserted in a correctly polarised way (position of
the cathode line)!
contact spacing and inserted in the openings provided (as per the component diagram).
Always see to it here that the diodes are inserted in a correctly polarised way (position of
the cathode line)!
In order that the diodes do not fall out when the printed circuit board is turned over, bend
the connection wires away from one another by approx. 45° and solder them with the
conducting pathways in a short soldering time. Thereafter, the projecting wires are cut
away.
the connection wires away from one another by approx. 45° and solder them with the
conducting pathways in a short soldering time. Thereafter, the projecting wires are cut
away.
D1 = 1 N 4148
Silicone universal diode
D2 = 1 N 4148
Silicone universal diode
D3 = 1 N 4001, 4002 or 4003
Silicone power diode
1.3 Capacitors
Insert the capacitors in the holes marked correspondingly, bend the wires a little away
from one another and solder them cleanly with the conducting pathways. In case of
electrolytic capacitors pay attention to the correct polarity (+ -).
from one another and solder them cleanly with the conducting pathways. In case of
electrolytic capacitors pay attention to the correct polarity (+ -).