hey i found.....well salvaged five IC's and they all are the same
they all have 8 pins and have this printed on them: :shock:
BA6220
701 473B
i just want to know if they are useless or if a should keep them :wink:
thanks,
eamonn.
Here ya go LINK (http://www.unisonic.com.tw/spec/BA6220.pdf)
Ya get these from a tape recorder?
hehehe...
Qouting the BA6220-datasheet:
"The BA6220 is a monolithic IC designed for controlling the speed of general-purpose DC motors.
The IC consists of a reference voltage generator, current multiplier, comparator, and start-up circuit. The speed of DC
motor is controlled by detecting the counter-electromotive force generated by the motor.
Various DC motors can be driven by changing the external constants. A large power dissipation is allowed by grounding
the pin connected with the IC substrate."
Very nice. Well, you could use it in an effect. Take a few LEDs, mount them in a round shape, pointing to the middle. In the middle, place a DC-motor with a lightsensitive resistor mounted on the motors axis. The resistorvalue will depend on the lightintensity of the LEDs and on the motorspeed... Maybe you could make a cool fx out of this 8)
Otherwise, get rid of it :wink:
grt, Brrt