RPI3 B+ switches a 24V EM relay that switches an AC resistive load. Phase I, is block diagram and pns correct ?
$30-250 USD
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Goal: Use RPI3 B+ GPIO to switch on a 1A/24V relay that switches on an AC resistive load.
Attached: My block diagram with detailed pns of components
1)I cannot change the 24V EM relay pn, it is fixed, everything else is flexible.
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Design Flow=
The '244 buffer boosts the RPi GPIO current with a voltage aprox 3.0V.
The opto isolator module is used to isolate the AC load switching noise from the DC RPI control.
The 24V voltage doubler is required to generate the 24V required for the fixed relay
The N channel MOSFET (IRLB8721Pbf) is used as a switch, so when RPI GPIO goes high, the 24V/2A is switched onto the 24V relay
-The MOSFET datasheet has Fig 3 which shows at Vgs =2.5V, Ids = 1A of current. So I expected the mosfet to turn on at 2.5V.
Phase I (this phase)
1)Is the idea of my block diagram correct ?
2)Will all the main pns chosen work ?
Vgs is also specd at +/- 20V.
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My expectation for mosfet to turn on at 2.5V may be an incorrect assumption.
Nº del proyecto: #32589391
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11 freelancers están ofertando un promedio de $196 por este trabajo
I have more than 9 years experience in embedded hardware design with firmware development . And I have done many products based on raspberry Pi . So I can do your job within a time limit with your satisfaction.
Could you please send me the connection diagram with the actual pin numbers and the values of components. You block diagram looks fine.
I have been working as a electrical power engineer for over 13 years. My expertise cover, Electrical circuit design Shop drawing Eplan Autocad PLC Mikro C (pic microcontroller) Arduino PCB design Soft-Starter Motors Más
Hello, I have 10+ years of Experience in Embedded HW product design with multiple domains like a consumer, industrial, automotive, IOT and wearable product. -Hardware architecture design using MCU, controller, and FPG Más
Technically, it would work. But in order to make it robust and safer I would suggest some little tweaks in some parts of the design. I can help you with that, you don't have to pay much for that. You basically already Más
