[raybbr]

From their website: "The Bird-B-Gone Direct Charger plugs into a regular 110v outlet and supplies power to up to 500’ of Electric Track. If placed outdoors, the direct charger must be protected in a waterproof box. The input voltage of the direct charger is 110- 120VAC, the output voltage is 800V (+/-) 20% Open k-circuit voltage. "

So they use a step up transformer to overcome the resistance. Also, DC cannot be transformed so it has to be AC.

[Victor]

"....From their website: "The Bird-B-Gone Direct Charger plugs into a regular 110v outlet and supplies power to up to 500’ of Electric Track. If placed outdoors, the direct charger must be protected in a waterproof box. The input voltage of the direct charger is 110- 120VAC, the output voltage is 800V (+/-) 20% Open k-circuit voltage. " So they use a step up transformer to overcome the resistance. Also, DC cannot be transformed so it has to be AC....."

I am a retired electrical engineer....I agree with raybbr in that you need higher voltage, if for no other reason than the bird's feet may have extremely high natural resistance, and the Bird-B-Gone specs pretty much confirm this...they use 800 volts!!

Another poster has suggested using a doorbell transformer wired backwards...this very knowledgeable individual probably knows the impedance of both the input and output sides of the transformer and the resultant voltage when you apply 120 vac to the output side of a 25vac doorbell transformer. The normally used input side would now put out a much higher voltage, as he indicates.

Try it; good advice.

[irishtenor]

Two things:
1. If the Bird-B-Gone works, use it. Unless you KNOW what you are doing, you’re going to get someone hurt.
2. From their website: ***If placed outdoors, the direct charger must be protected in a waterproof box. *** Why would anybody in their right mind have one INDOORS???