solid state relay

  1. N

    Question about a Thermal Gradient Ring for Research in Rats

    Hi all, I'm a graduate student currently working on the neurobiology of addiction and pain, with an interest in the design of a novel thermal gradient ring that can be controlled between -5 degrees C and 60 degrees C (see the first attachment). Unfortunately, I'm definitely a novice when it...
  2. JesusLopez

    PID Controlled Peltier Heating and Cooling

    My goal is to rewire a Peltier AC unit by removing the on-board PSU and Analog temperature controller. I would like to convert the AC unit to Cool and Heat by reversing the Peltier modules polarity. Then control both heating and cooling functions with a PID. Then running it all with an external...
  3. D

    ACST1635 logic controlled AC Switch help

    Hello experts, I've been trying to build a small home automation project using ESP32, PubSub client and an MQTT broker on Android. Rest all is fine, but I was trying NOT to use a relay for controlling the appliances. While considering Solid State Relays, I came across ACST1635 from ST...
  4. C

    Using solid state relay in high load applications

    What are the potential risks in using a solid state relay for a load between 10-20A? I've found HP rated SSR's with a surge current graph that I believes fits the characteristic of the inrush current of an AC or DC motor, but I also read that the peak current of the motor must be half the...
  5. C

    Driving solid state relay input

    Can a 4-20 mA (constant VDC) analog output on an industrial controller be used as an input on a solid state relay? I wasn’t sure how a device behaving as a variable current source might interact with a load such as the LED in an solid state relay that varies in its current draw. For example...
  6. C

    Determining inrush current on manufactured AC and DC Pumps

    I am using a couple pumps that are manufactured to be run from a standard wall outlet. I've learned that upon starting, both AC and DC motors can have inrush currents of several times the rated current, but I'm unsure how to determine if these pumps have any internal limiter on inrush current...