| Electronics > Projects, Designs, and Technical Stuff |
| Computer controlled solid state relay |
| (1/1) |
| 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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