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Computer controlled solid state relay
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HKJ:
Sometimes I do other stuff than reviews, this is a piece of test equipment.
Functions:
* Can turn on/off any of the 3 outputs from a command or from buttons on the box.
* Can generate PWM with a frequency from 1Hz to 100kHz on up to 3 channels
* Can generate push pull PWM with dead time on one channel using output 1 and 2.
* PWM frequency can be specified either as frequency or period time.
* PWM duty cycle can be specified either as percent or as high time.
* PWM has a resolution up to 0.1%
* Frequency can be specified with on decimal
* PWM duty cycle can be specified with on decimal
* Time is specified default in milliseconds with two decimals, some other time units can be selected by a letter after the value.
* Timed commands works up to 10 hours
* Time specifications below 4 seconds uses hardware timers with available resolution down to 10us
* Time specifications above 4 seconds uses software timing with 10ms resolution.
* Output 1 & 2 are synchronized, output 3 can be up to 1us late.
* Can sequence the outputs, either with pulse length or when they turn on.
* Commands can be stored in the device and activated with a button for off-line usage.
* Outputs can handle 10A continuous and much more in peak.
* Can deliver pulses below 1us in PWM mode.
Full project here, including schematic, software and gerber files:
Computer controlled solid state relay
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