Sukhbinder Posted December 12, 2005 Report Share Posted December 12, 2005 i'm having some problems with my sony NiMH charger. the charger has a TO-220 package transistor with the number 502 on it. i cannot find out if it is a BJT or a MOSFET. its a fairchild make i think but could not find anything on the fairchild website. can any one help me with this and get me its datasheet. the transistor is used to supply the current to the batteries and is connected to a LM358 IC. ;) Quote Link to comment Share on other sites More sharing options...
hotwaterwizard Posted December 13, 2005 Report Share Posted December 13, 2005 LM358 is an Amplifier. the datasheet has a diagram of a current limiter.LM358N.pdf Quote Link to comment Share on other sites More sharing options...
Sukhbinder Posted December 13, 2005 Author Report Share Posted December 13, 2005 thanks for ur help, i finally found that the transistor was a TIP42C, the number was covered with black ink. It uses a TOP222Y offline PWM switch in the power supply.i checked its datasheet which says its a 15-25W power device. can it provide enougt power to quick charge 4 2300mAh NiMH cells. i doubt these sony guys. Quote Link to comment Share on other sites More sharing options...
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