TDA1085C Set Universal speed controller

Description

Universal single-phase motors
can be found in many household appliances (washing machines, clothes dryers, etc.
300-500W power engines.
).
They can be operated by direct or alternating current, and also have tachometer for determining the speed of rotation
These motors have no fixed rotational speed, so they need a control circuit.
In simple cases, and under constant load,
it is sufficient to use a dimmer.
With him will work, too. However, the rotation speed decreases with increasing load. For example,
for use in controlling the lathe a simple phase control is thus not suitable. In order to remain at a constant rotation speed is necessary to use a different scheme.
Universal speed controller TDA1085C Motorola, designed specifically for the use of these motors in washing machines.
This scheme is essentially taken directly from the datasheet on this chip.
Note:
TDA1085 are no longer produced.
Information
: R16 constantly consumes about 3W and heated respectively quite.
Triac should be used with a supply current of 3-4.
For the calculation approach 1 kilowatt at 220V = 5 amps of current.
Triac is targeted at 12 and it is about 2kW. Without headroom.
However, the track of the scheme on such a large current is calculated.
For use with high-power motors it is necessary to strengthen the track conductor.
Or make a triac in a separate cooler.
To control a powerful hand tool with a commutator motor without a tachometer, there are other control schemes. (In development)
Speed control for universal commutator motors,
TDA1085C
Recommended dimensions of 100 mm x 50 mm
Note: The entire circuit is not isolated from the mains! The relevant safety regulations must be observed.
I do not accept any responsibility for any damage or injury!
Parts list:
capacitors:
C1, C2: 100mF / 63V
C3, C4: 1 mF / 35v
C5: 47mF / 35V
C6: 100mF / 35V
C7: 47nF
C8, C11: 100nF
C10: 100 nF / 230V ~
C9: 680pF
diodes:
D1: 1N4007
IC:
IC1: TDA1085
trim resistors:
P1, P3: 100k
P2: 4k7
resistors:
R 1, R 2: 820k
R3: 2k2
R4: 2k7
R5: 1k
R6: 6K8
R7: 1M
R8: 47k
R9: 68k
R10: 820 / 1W
R11: 470k
R12: 22k
R13: 120
R14: 100
R15: 220k
R16: 6K8 / 5W
R17: 270
R18, R19: 0.1 / 5W
Triac:
T1: BTA24
Others:
1 6-pin terminal block
1 2-pin terminal block
Package Included:
BOM Universal motor speed controller +
PCB
.
Shipping to worldwide (airmail) with
TRACKING NUMBER
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