Love this, would be great for the personal security of a bike project.

@de-bodgery

10 ай бұрын

I use them myself

Hmmm, it would appear you noted that you had planned to control this switch by connecting the white input pin to voltage. From the Amazon description, it would appear that that is a PWM/PPM servo input. In addition, you noted that you would not need the red input pin, however, I believe that is what powers the switch (3.9-15VDC). I have played with many of these, most of which are low side disconnects that suck as you noted, however, I am not sure they are going to work as you have intended.

@de-bodgery

11 ай бұрын

I also said that I had already used one.

Other than it being a better solution, the wiring makes a lot more sense to me. Power in --> power out. Pretty straight forward. If you sere to use this with a blinker relay, would the relay go first in the curcuit, or would it go after this?

@de-bodgery

11 ай бұрын

I'm not sure why you'd use this with a flasher relay. Also flasher modules cone in some really good and really shitty implementations...so whatever yours is and it's reliability would effect everything.

@georgeforeman89

11 ай бұрын

@@de-bodgery I was thinking you would use it as part of a lighting circuit- like with left and right blinkers. I must not understand the use cases of the switch.

@de-bodgery

11 ай бұрын

@@georgeforeman89 I guess if you have a LOT of flasher lights you might need to boost the amperage that your flasher module can handle. In that case this could do that. It depends on your flasher circuit. Some, the handlebar switch is seeing 10mA and all it's contacts are doing is providing a control signal to the flasher module. Most of the EV's I've ever built work this way. The flasher module has dual relays that handle all the current carrying and switch on and off +12v. Others, the switch contact is powering the entire flasher circuit. This is simpler and cheaper and common to a lot of Chinese EV's. For that second scenario, this could enhance switch contacts for flashers. I'd probably convert this kind of flasher circuit to the better version. This device not a flasher module in any way. It's just a mosfet switch. How you use it is up to you.

Wasn't RDS on resistance lower on low side mosfets?

@de-bodgery

Ай бұрын

I think you mean N-channel mosfets. They are used for both low side and high side current switching. The same can be done with P-channel mosfets, but they are used much less commonly. Rds is very dependent on the mosfet. You can have high or low Rds in any kind of mosfet.....N-channel or P-channel.

Im not exactly sure why just dont use micro relay. Very robust, simple, cheap.

@de-bodgery

3 ай бұрын

Yes...true, just not solid state and has contacts. A typical mosfet that is 1/4" x 1/4" can handle 30 amps. A relay with 30a contacts will be 10X larger at least and will still draw 100mA to get it to activate while the mosfet switch takes maybe 10uA. So your choice...big, bulky, power hungry and low tech or tiny, efficient and all for a similar price. Also, digital electronics can enable the mosfet switch directly while a relay will take a mosfet switch to turn it on!

@pashko90

3 ай бұрын

@@de-bodgery I also advice you to look into switching keys such as BTS555, perfect for high current applications.

@de-bodgery

3 ай бұрын

@@pashko90yup...mechanical contacts instead of solid state ones. I advise you to look into solid state switching such as mosfets! There's very good reasons why modern cars don't use relays anymore. They are LESS reliable than mosfets.

@pashko90

3 ай бұрын

@@de-bodgery it depends. I still see a lot of relays used in a brand new cars. I work with automotive electronics relatively frequently.

negative side switching is for weirdos

@de-bodgery

11 ай бұрын

And it doesn't meet any electrical switching standards either!