Small Control Systems


Draft, implementation and repairs of electronics


Contains selected devices of older design

Microcomputer for measurement and regulation

Photo from above Photo from below
JIt is mainly intended for measuring ss. millivolt voltages, e.g. from thermocouples from 4 or up to 6 channels. Direct connections of temperature sensors, e.g. Pt100, further bridge measurements or measurements from other input voltage ranges - e.g. 0-10V - are also possible. The design is a 2-sided metallized PCB 93x84mm, HAL tinning. The possibility of fitting into a support on a DIN35 rail. Connection of analog I/O, RS485 and power supply - with terminals, RS232-connector Canon 9 pin male (for connection to a PC with a zero modem), digital inputs and outputs of the processor on connectors (with latches) 2x5 and2x8 pins for connecting flat cables. The boards are in the paddock - they have a controller with with an Intel 8051 type core, which replaces the Microchip controllers.
Schematic a board

Peripheral boards with communication of RS485:
LED display 2x9 digits with buttons Photo from above Photo from below Schematic board
Opticky oddělené V/V s triaky Photo Schematic board