Hi. Looking for a simple solution for a project. Currently, Im using a 2 Channel relay module and fast recovery diodes, to switch at high frequency input (5dcv)to provide a pulse and reverse polarity load at 35dcv / 1amp. Obviously, the relays will burn out, therefore im searching for a simple electronic switch module. Maybe a motor driver, that only requires a on/off voltage input signals or solid state relays. Thank you in advance for your help.
I’d have a look at using a MOSFET, I covered the basics of selecting one over on my project (still in work).
Also take a look at this MOSFET module: Freetronics N-MOSFET Driver / Output Module | Core Electronics Australia
To help out more what kind of frequency are you looking to switch and how much current is your input able to source?
Re: using a motor driver, you might be able to use it but there are lots of caveats, if you accidentally switch the polarity your circuit might let out the magic smoke
Don’t know why unless they are abused. Should last a long time.
You won’t switch relays at very high frequency. A typical switching time for the average relay is 10msec on and 10msec off.
The Mosfet board Liam linked above is a useful device where all the ancillary bits are mounted on the board for you and has only 3 connections.
But. It is a bit hard to guess exactly what you are trying to do so could you post some sort of circuit or diagram explaining your problem.
Thank you for your reply. I replied to Liam via email and attached a image/ video of my project, my bad i though the images would show up here.
The MOSFET board i believe switches negative…i require both neg and positive. Im currently looking at trigger switch module 4-way fet mos dc control board.
transistors like BJT, FET and MOSFET would be use as switch and they are in range of your required frequency
Thank you for your reply
I decided that a DC solid state relays might be suitable and robust. However, I might need to reduce the frequency range.
I found this SSR.
LBA710 is a 60V, 1A, 0.6Ω dual Solid State Relay integrating independent single-pole normally open (1-Form-A) and single-pole normally closed (1-Form-B) relays into a single package. It features a superior combination of low on-resistance and 1A load current handling capability.
An N Channel mosfet would be used for low (Negative) side switching and a P Channel mosfet for High (positive) side switching. The high side switch is a little more complicated and usually requires the addition of a transistor.
Regarding the LBA710. Without knowing exactly what you are intending to do it would be a bit difficult to comment on the use of this device.
A bit more context here would help a lot, what exactly are you trying to drive?
Note some SSR’s require a 0 V point to start conducting
The LBA710 device Brett found seems to be an opto isolator with some relay type functions and should switch DC OK.
I still stand by that statement and would need to know all the details before further comment.
sometime back i was working on similar project and i managed to design my own electronic switch that helped me so much. Have a look at it here DC Relay Switch Module - Share Project - PCBWay and see if it my help you out too