This circuit is alternative approach to same solution show in earlier post. Here i have put the complete circuit in PNG format. 8038 is a marvelous chip, a custom monolithic analog computation unit, a device popular around the 80s, it was far ahead of its times indeed.
Now its availability and application are much reduced. Intersil made Popular Analog ASICs, the word ASIC itself came much later. They were also early in making low power cmos, this was at a period when microprocessor system consumed a lot of power and microcontrollers had just started coming in.
Tacho Counter for Speed and Quantity Measurement
This was a small circuit made for driving an Impact counter. The
heart being ICL8038. It must have been a Motor driving a Conveyor, the
motor has a feedback attachment called Tachogenerator.
part of the circuit is shown here. See the image of product here Tacho
Counter. The configuration is derived from the Application Notes of
Intersil. The Voltage from Tachogenerator is Measured on a DPM-DVM and
also fed to this circuit after attenuation and filtering.
Function Generator using ICL8038
square pulses of 8038 is used to derive a Logic pulse train for a
CD4040. The CD4040 works of 0 and 12V. The above circuit is on +12 and
-12. That is the reason R10-R15-Q1 are used. The pulses are 0-12V
pulses. The Zero is Virtual like the Virtual Ground in low current power
delabs designs - delabs notes