ARE THESE ANY USE??????

[el duderino]

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.

[Sic]

Here ya go LINK

Ya get these from a tape recorder?

[brrt]

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  
Otherwise, get rid of it  :wink:

grt, Brrt