Thread: Spike Control Line Signals
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Unread 25-06-2005, 11:50
BrianBSL BrianBSL is offline
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Re: Spike Control Line Signals
Quote:
Originally Posted by Venkatesh
I just borrowed a 2002 Blue Spike and measured the current required to switch the relay forward at 5.5V (supply issues). I found that the spike needed 85 mA to switch, which is way out of line with anyone's measurements from here. I also found that just powering the spike required 42 mA. I don't think the IFI controller is using just the PIC to drive the relays, but instead probably a number of relay drivers.

I checked the numbers many times. Any ideas?
Wow. Those numbers sound almost as if the control lines are directly driving the coil. I guess I always thought that it was a 12v coil relay with a transistor to trigger it on and off with 5v.