Page 4 - paruzzi-magazine-en-23

#67 Electrical voltage drops

Introduction

The electric consumers of your This article only deals with

classic Volkswagen expect the DC and DC voltage circuits.
full 6 volts or 12 volts (or more) We have explained in edition

to function properly, which is 17 what is direct current (DC)

unfortunately not always the and what is alternating current
case. Especially the 6 volt version (AC). Our classic Volkswagen

sometimes complains about is powered by direct current

slow running windscreen wipers, coming from the generator (DC
weak headlights and direction dynamo or AC or alternator). You

indicators that flash too slowly. will only find alternating current

When the ignition in turn gets a inside the generator. Alternating

too low voltage, then it is over voltage principles belong to a
and out, the engine runs badly, completely different chapter of

misfires, or does not start at all. electricity.

If the battery is healthy (see

edition 01 for battery diagnosis),

there may be excessive voltage

drops in the electrical circuit. It
is time to intervene. But first we

will try to understand the theory

behind voltage drops, this will
help you to better understand

how it works to make a correct

diagnosis later on.

4 Paruzzi Magazine 23