Soldato
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CDI unit thyristor voltage regulator help please
- Thread starter GothicGhost
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The devices you have linked to are linear voltage regulators. These take a variable incoming voltage and provide a stable output voltage (though the input voltage always has to be greater than the output).
The thyristor (aka SCR for Silicon Controlled Rectifier) is a type of high power electronic switch which is very commonly used within CDI modules for switching the main capacitor to the coil.
The two devices are completely different and not interchangeable in any way.
The logo suggests it was made by the Fuji Electric company, but I've not found any reference to the part number. That isn't totally surprising however since many automotive manufacturers have devices either specially designed for their application, or they use an off the shelf device but have it specially coded for them. However I've not found any evidence that FE actually make voltage regulators. The ET460 reference you have posted it simply the name of one of the courses in a university, it's not referring to a semiconductor device.
If it really is a 12v voltage regulator then you potentially have a very wide choice of parts since the common 7812 regulator is made by dozens of different manufacturers. However another important parameter for a voltage regulator is the maximum input voltage. Most common 3 terminal regulators are rated only up to about 30-35v, and they will quickly fail if you have transient input voltages higher than this.
If it's a thyristor then there are numerous parameters that would would require for an equivalent replacement, without a datasheet you are flying blind.
I'm surprised you managed to get the CDi apart, wasn't it a "potted" module (i.e. filled with silicone or epxoy)?
The thyristor (aka SCR for Silicon Controlled Rectifier) is a type of high power electronic switch which is very commonly used within CDI modules for switching the main capacitor to the coil.
The two devices are completely different and not interchangeable in any way.
The logo suggests it was made by the Fuji Electric company, but I've not found any reference to the part number. That isn't totally surprising however since many automotive manufacturers have devices either specially designed for their application, or they use an off the shelf device but have it specially coded for them. However I've not found any evidence that FE actually make voltage regulators. The ET460 reference you have posted it simply the name of one of the courses in a university, it's not referring to a semiconductor device.
If it really is a 12v voltage regulator then you potentially have a very wide choice of parts since the common 7812 regulator is made by dozens of different manufacturers. However another important parameter for a voltage regulator is the maximum input voltage. Most common 3 terminal regulators are rated only up to about 30-35v, and they will quickly fail if you have transient input voltages higher than this.
If it's a thyristor then there are numerous parameters that would would require for an equivalent replacement, without a datasheet you are flying blind.
I'm surprised you managed to get the CDi apart, wasn't it a "potted" module (i.e. filled with silicone or epxoy)?
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