Teaching experiment circuit board based on PLC high speed counter
The utility model provides a teaching experiment circuit board based on PLC high speed counter, include printed circuit board and weld DC power supply module, the DC on printed circuit board DC module, pulse oscillation circuit, comparator, impulse output terminal and current -limiting resistor, cur...
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| Format: | Patent |
| Sprache: | chi ; eng |
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| Zusammenfassung: | The utility model provides a teaching experiment circuit board based on PLC high speed counter, include printed circuit board and weld DC power supply module, the DC on printed circuit board DC module, pulse oscillation circuit, comparator, impulse output terminal and current -limiting resistor, current -limiting resistor includes a current -limiting resistor and the 2nd current -limiting resistor, DC DC module and comparator connection DC power supply module, does pulse oscillation circuit connect DC the DC module to connect the comparator through the 2nd current -limiting resistor, impulse output terminal is connected through a current -limiting resistor to the comparator. The utility model discloses a teaching experiment circuit board based on PLC high speed counter, it is adjustable to have double - circuit pulse output and a pulse frequency, and dependable performance, low price, preparation are easy, can satisfy the demand of the learning aid of PLC high speed counter knowledge point.
本实用新型提供了种基于PLC高速计数 |
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