Velleman-projects K1823 Assembly instructions Manual do Utilizador descarregar pdf (Página 6)

Connection example

9. Connection example

Execute the connection as

depicted in the figure. Connect

the alternating voltage of a

transformer with the ‘AC IN’

connections. Connect the

output voltage with the ‘+’ and

‘-‘ connections. Set the desired

output voltage with trimmer

RV1. Mount VR1 on a suitable

heatsink for applications

requiring more power.

Be sure to provide sufficient

electric insulation: fit an

insulator and a plastic

insulation ring between the

VR1 and the heatsink because

the metal side of the VR1 is

electrically connected with the

rest of the circuit.

Replace the trimmer with a

potentiometer of the same

rating if you want to use the

circuit as a permanently

adjustable power supply.

Fig. 1.0

FUSEHOLDER

FUSE 250mA T

STRAIN RELIEF

AC P OWER

ON-OFF SWITCH

TR ANSF ORM ER

ENCLOSURE

Mica washer

TO220

isol ator

DC OUTPUT

DC output adjust

1 2 3 4 5 6 7 8

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Velleman-projects K1823 Assembly instructions Manual do Utilizador Página 6