AMX TXC16 Plus Specifications download pdf (Page 46)

SG-2000 MANUAL 39

The SGC Building, 13737 S.E. 26th St. Bellevue, WA. 98005 USA

resistor in series with the ignition wire and installed at the distributor will usually help

matters.

When you are tracking down ignition noise near a gasoline engine, you may find that

the distributor is a major source of noise. Generally, you can't use capacitors to reduce

noise from a distributor because the noise is coming from the spark generated for

ignition. Adding enough capacitance to change the rise time of the spark voltage to a

lower value which will reduce RF “hash” delays the time the spark will gap inside the

engine. This means that timing will be changed (delayed) if a purely capacitive answer

is sought.

Here, shielding of the distributor and wiring is likely to be the best answer. Even when

you put shielding on the outside of ignition wires, you create a capacitor. Depending

on the type of ignition system and the length of the spark plug wires, you may find

timing retarded to the point that an engine will not deliver good performance without

adjustment of timing.

10.5 Solar Powered Chargers

Not much needs to be said about solar charging systems except that good design

practice needs to be followed to provide operation under all conditions which are

expected to be encountered.

The most critical element in design of an HF solar power system is local weather

conditions. If you are designing a solar system for an area where there will be little

sunlight for many days in a row, then a large battery system will be needed along with

additional solar panels. On the other hand, if you are designing for an area where there

is a lot of sunshine at all times of the year, then you will need fewer panels; in some

cases two 53-watt panels and one good gel cell battery will be sufficient.

Seasonality is also a consideration. Obviously, in the high Arctic, solar power is ideal

for the month or two during the year when the sun never goes down. But in the other

months, solar power is not a good idea. Hence, another consideration should be

latitude where a solar system will be installed and a calculation of the number of hours

of daylight which will be available.

The kind of regulator which is selected to control the output of the solar panel(s) is very

important. It should operate over a wide range of loads and should continue to provide

trickle charging to keep the battery system charged to its fullest between operating

sessions.

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AMX TXC16 Plus Specifications Page 46