[Diy_efi] Ignition amplifier Bosch 0-227-100-200

[Torbjörn Forsman]

Most probably, the 0 227 100 200 is just an amplifier, intended for use 
together with an ECU which takes care of the dwell calculation, 
apparently they are used on Motronic (or Bendix "Fenix") systems. The 
only Bosch ignition modules I know about that have built-in dwell 
control are the old ones used together with distributors with inductive 
sensor and mechanical ignition advance. But they use the fact that the 
p-p voltage from the inductive sensor increases with the rpm, for 
controlling the dwell. Most of those ignition modules can also be used 
as pure amplifiers for a square wave from an ECU, and in that mode they 
do not change the dwell of the input signal.

Best regards

Torbj?rn Forsman


Stevan Glogovac wrote:
> Hello,
>    
>   I am about to convert my existing ignition system to coil-over-spark. As I would need four end stages (ignition amplifiers), I was interested in using ones that have more then one end stage inside the samo housing. I am able to purchase Bosch items 0-227-100-200 that incorporate two end stages quite chaply.
>    
>   However, I ultimatively need modules that are able to control the dwell on their own. I was able to find some info on 0-227-100-200, but not if the modules are capable of doing dwell control.
>    
>   Does anyone have a clue?
>    
>   Many thanks,
>   NG
> 
> 
> 		
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