looks like you are the correct answer to this post. So, how do they make these things... purely in software?Usually every part of that FOB PCB is actually part of the circuit. And the cell body is part of the antenna circuit as well. The result being that almost any addition will alter the performance, and usually not improve it.
Certainly removing the battery reduced the capacitance in most of the circuit. And these devices are designed as a system, rather than as a collection of independent circuit elements. It is even possible that the case enters into the operation.Do you think its a fair assumption that taking out the battery removed quite a bit of metal from inside the loop that is supporting the antennas resonance?
If the battery is insulated then it doesn't matter whether it is dead or not.Place a dead battery in the compartment with positive terminal insulated from the battery
electrically yes, but does it?If the battery is insulated then it doesn't matter whether it is dead or not.
by Jake Hertz
by Jake Hertz
by Jake Hertz