I II
I SAK140
REVOLUTION COUNTER
The SAK140 is a monolithic integrated circuit intended for use as a revolution counter in motor cars.
It contains a stabilization circuit and a monostable multivibrator which converts the circuit input pulses into output current pulses of constant duration and amplitude.
This pulse duration is determined by an external R -C network; by proper choice of R and C, the circuit can be easily adapted to any milliammeter.
Together with the internal stabilization circuitry this makes the indication almost independent of temperature changes and supply
voltage variations ~
QUICK REFERENCE DATA
Supply
voltage
Power dissipation at n =6000 rpm;
10 = 12 rnA; Vp == 12 ...