Showing posts with label sticky relay. Show all posts
Showing posts with label sticky relay. Show all posts

Wednesday, March 20, 2013

Low Cost Coil Economyzer Test for Tyco Kilovac EV200A1ANA

I am still in search of an economizer for my new Tyco Kilovac EV200A1ANA


Last night, I tested different resistor values along with this 4700uF capacitor - I got for my Grid Tie Inverter repair previously - and found that the simple economizer described in this DIY Electric Car thread


seems to work . I could not find a resistor that works so I used this air dryer resistive wire again - alreday used on my mini bottom balancer - and cut a piece that was 10Ohms;


Closing the circuit bypassing the economizer, the relay closes and is using 3,5A

With the economizer, the contactor is closing and only 1A is going through the circuit - instead of 3,5A with no economizer -   


1A at 12V = 12W

I will have to try with 20Ohms and see if what it does ... The idea is to leave the relay closed using minimum current, thus minimum power

Thursday, March 14, 2013

EVTV Friday Show - March 8, 2013

- Brain returns
- Battery prices and Tesla's Battery Achilles Heel
- Electric Escalade Heating Woes continue
- EVCCON 2013 August 6-11



Brian is back ! It's good to see him



I think this is 'love' :-)


Tesla's battery system strengths and wicknesses 



Cadillac Elescalade heating system improvement continues : More powerfull heating element 


& Contactor vs Solid State Relay to cycle the heating system


"Welcome back Brian" with a good handshake ...

and a warm hug !







Thursday, July 5, 2012

LiFePO4 ESS update - 24V relay & Arduino board


My 12V automotive relay for the charger line is not really the right component to carry 24V @ 10A and is heating up a lot, got stuck few times, so I decided to buy a 24V one, and it arrived 


More important, following my work on getting color codes from Wattson, I ordered an received an Arduino Leonardo card and 3 high voltage relays
This board will read the voltages from green, blue, red Wattson LEDs as inputs, and using a program, trigger signals on the outputs to activate relays, switching ON & OFF my Grid Tie Inveters

Nice packaging

It is smaller than I tought

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