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Technical details > Fundamentals
 
 
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Fundamentals
Electromagnetic compatibility
Electrical resistance
Recommendations for fitting
Ignition cable diagnostics
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MECRA S.r.l.
Contrada Rondinelle snc
75100 Matera (MT) - Italy

Tel: +39 0835 262747
Fax: +39 0835 264919

Email: info@mecra.it
 
   
Fundamentals of ignition cables

Fundamentals of ignition leads

Resistances do not constitute a contradiction

For optimum operation the ignition system requires an adequate suppression of interference so as not to create problems for the correct functioning of the electronic communication devices, the engine control unit, or radio equipment.
Mecra only uses resistive spark plug wires, they are then fitted with a suppressor inside to eliminate the likely interference due to the presence of the high voltage
All electrically driven equipment generates more or less intense electromagnetic fields almost all of which are harmless, but in some circumstances these phenomena are undesirable (e.g. interference with radio reception) or even dangerous (called ELECTROSMOG).

Oscillating circuit and electromagnetic compatibility

The coil, the capacitors with an accumulation of loads and the resistances constitute the ignition system that in electrical-technical fields is defined as an oscillating circuit.
The resistor fastenings built-into the ignition circuit (with values almost always between 1 and 5 kΩ have the function of reducing the electromagnetic oscillations and ensure the correct interaction of the various devices.
The electromagnetic compatibility (EMC) is ensured by the action of the resistances assembly of the ignition system.

The characteristic of the wires with inductive reactance is that their resistance varies according to the ignition frequency (number of engine revolutions): the resistance of an inductive nature then increases with the increase in the number of engine revolutions.

Quality without loss of power

The resistances of the ignition circuit do not have any influence on the engine’s performance.

Mecra spark plug wires are made in such a way as to provide excellent interference suppression and ensure an excellent OEM ignition quality performance.

Mecra spark plug wires ensure: safety, durability and good value.

 
 
       
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