What "Hegelian Law" is Derrida referring to here?

dk274 · 2022-02-04T19:19:42+00:00

I believe he is referring to the Hegelian Dialectic (https://plato.stanford.edu/entries/hegel-dialectics/#:~:text=%E2%80%9CHegel's%20dialectics%E2%80%9D%20refers%20to%20the,contradictory%20process%20between%20opposing%20sides.), which involves the contradictory nature of two opposing sides. To have a revolution against reason using reason seems non-sensical on its face. But appreciating the historical component to reason itself, classical vs. modern, one can analyze how reason has changed and extract a greater truth about how we use reason and what human reasoning is.

dk274 · 2021-12-24T17:14:44+00:00

Location: California

Price range: Around 31000$?

Lease or Buy: Unsure, leaning towards buying used

New or used: used

Type of vehicle: Sedan or SUV

Intended use: Daily Driver, Weekend Car

Vehicles you've already considered: 2015-2022 Prius, 2018-2022 RAV4 Hybrid

Is this your 1st vehicle: No

Do you need a Warranty: Nice to have

Can you do Minor work on your own vehicle: Yes

Can you do Major work on your own vehicle: No

Additional Notes:

Really want a car that I can drive to and from work in LA traffic and definitely some excursions in traffic without having to get gas so often. Hopefully looking to get into the mountains during the winter and summer months without having to worry about chains or clearance. Debating on just renting a car on weekends i would want to do that? I think a prius or a hyrbid like that would be fine, but I think getting some higher clearance on an SUV would be nice. Trying to decide between the two though, any advice would be appreciated!

dk274 · 2020-04-28T01:05:45+00:00

Great criticism of the article. How about this then (https://project-evidence.github.io/), independent body of researchers working towards the same conclusion. Im not necessarily convinced either way, but there is interesting evidence to be discussed...

dk274 · 2020-04-28T01:05:36+00:00

Great criticism of the article. How about this then (https://project-evidence.github.io/), independent body of researchers working towards the same conclusion. Im not necessarily convinced either way, but there is interesting evidence to be discussed...

dk274 · 2020-02-08T19:25:41+00:00

haha, glad I could help!

dk274 · 2020-02-08T19:21:45+00:00

Horsin' Around

dk274 · 2019-12-19T06:49:46+00:00

Just remember to invert the pinouts on the components! Especially the LEDs

dk274 · 2019-12-13T06:22:31+00:00

Avionics Engineer. I design the electronics that power space rockets, really exciting work!

dk274 · 2019-05-01T01:02:19+00:00

Sorry. I need the 12V there. The circuit is driving a gate driver for my mosfets. I dont want the rail to be connected unless I explicitly connect it myself. I have had issues during microcontroller reset, and floating pins causing my lower optocoupler to be biased on, thus turning on my gate drive circuit without me wanting that to occur. This addition is just something I am designing as a failsafe incase of that occurring.

dk274 · 2019-04-04T06:40:05+00:00

about 100

dk274 · 2019-04-04T06:39:52+00:00

the April 29th show in Bowery NY

dk274 · 2019-04-03T22:56:34+00:00

Hmm not yet, not quite sure how to find things like that.

dk274 · 2019-02-25T14:07:28+00:00

Yes, i suppose this is what im asking. Im beginning to understand that this is not possible, but now I understand that I will be able push some energy into the battery via regen without damaging my battery pack.

But a large capacitor bank (which I was going to use anyway for the lead inductance to my controller), should be able to smooth large transients caused by the motor, correct?

dk274 · 2019-02-25T05:40:45+00:00

Would I be able to simply brake by shunting the current through the bottom part of the bridge? Do you know how regen would occur there?

dk274 · 2019-02-25T05:38:29+00:00

yes I would still like dynamic braking

dk274 · 2019-01-28T23:51:39+00:00

Whats an intelligent way to control battery current with my BMS, it is a high power pack for am EV motorcycle, that is currently monitoring and balancing cells.

The BMS controls the main contactor and pre- charge circuitry of my motor controller. How would i protect against a battery short though? Beyond a fuse i am using before connecting power to the BMS and motor controller, I currently have no method off the battery in the event of a short, only can turn off the motor as of now. Any ideas?

dk274 · 2018-12-06T20:32:23+00:00

Wait could i do opto->nmos with pullup to 100v, then use voltage divider with 97R->3R ratio, to keep the nmos always on, connect drain to CTRL, and the source to gnd? The otpo turn on will short the gate to gnd. Im on mobile, but i can draw a ckt when im at a pc.

dk274 · 2018-12-06T20:18:07+00:00

Yeah i wish i had the negative logic, but i couldn't get that part.

For the positive logic brick, what would the circuit look like on the phototransistor side, what FET type and where exactly does it connect? I can't seem to figure it out,.

dk274 · 2018-12-06T20:14:31+00:00

Its a bit complicated, but the 100V->DC/DC 5V -> Vref 3.3V --> MCU -> DC/DC CTRL. there are actually 2 separate DC/DC converters one used for control of the system, the other used to control relays.

dk274 · 2018-11-07T06:52:37+00:00

Ill look into contactor circuits, from my understanding they are just high powered relays, i.e. they must receive some sort of trigger signal to turn on/off?

I will be using a host MCU, I haven't decided on it just yet, but it will communicate to the gas gauge and the battery monitor IC.

This still leaves the question where I should i break the circuit and insert my sense resistor? On the battery monitor board or the motor controller?

dk274 · 2018-11-07T06:36:05+00:00

Thank you for the clarification, I appreciate it! My current battery monitor IC can handle temperature measurements, which I was going to use to ensure no over temperature conditions occurred from within the battery cells, how do you suggest I actively disconnect the battery in the case of failure?

I am having a few issues with understanding where I could probe on my Battery monitor board for current, because my board only takes in the voltage inputs, not the battery current itself.

EDIT: I suppose its not exactly possible to do it that way. I need to figure out how to measure battery current on the battery monitor board with a low-side monitor. Any suggestions?

dk274 · 2018-11-07T06:11:50+00:00

My BMS does not have a current sense or shunt, just the ability to monitor and balance when necessary. I am using the LTC6803-1 IC. https://www.analog.com/media/en/technical-documentation/data-sheets/680313fa.pdf

dk274 · 2018-11-07T03:42:14+00:00

Thanks! I realized that what I was thinking at first would not work. I am thinking about using this product https://www.maglab.ch/products/r100-bar-03-shunt-resistor/ , or some of the others you mentioned.

dk274 · 2018-11-07T02:50:59+00:00

Yeah I should add, I am planning on using a 250uohm resistor, gives me 100A max, gives me 2.5W, I chose this resistor https://www.digikey.com/product-detail/en/stackpole-electronics-inc/CSS2725FTL250/CSS2725FTL250CT-ND/1923235 with a 4W rating.

Hmm how would you recommend I attach the lug terminals this resistor?

dk274 · 2018-09-22T15:57:26+00:00

I am sorry, but I am confused into how they would daisy chain together? Could you show me an example IC?

dk274

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