Upgrades to Audi key

[johne]

Impressive

The LED will do the AC to DC conversion for you and the little 3 legged semiconductor hidden in the corner to do the switching.

I think I'd have gone the use a lithium coin cell replacement to get the 3 volts or even two 1.5 volt silver cells in series as the easier option...........that said my key fob, battery and bulb are 15 years old, all original and still working fine.

John

[HPmuirt]

Very nice!...but I am a bit confused...you must at least be switching somewhere to create di/dt and interact with the inductor, yes?

Yup, it is indeed switched, you just cannot see that very well with the poor picture taken on my phone.

So whilst Einstein might be spinning in his grave, Ohm would not be

Cheers n

Si

[Wheeljack]

Very nice!...but I am a bit confused...you must at least be switching somewhere to create di/dt and interact with the inductor, yes?

[HPmuirt]

Make that 3! that step up transformer squeezed into the key is just excellent. I really love things like that. Top Top job. To some it may just be a light on a key but that real problem solving right there!!!

Cheers matey

9,475 to go

Cheers n

Si

[maddagent]

Make that 3! that step up transformer squeezed into the key is just excellent. I really love things like that. Top Top job. To some it may just be a light on a key but that real problem solving right there!!!

[HPmuirt]

I am totally impressed, how did you make the DC into AC?

Why thankee, that's 2 impressed, just another 9,476 members to go (I've given up on Fatty )

All DC by the way matey

Cheers n

Si

[newsh]

I am totally impressed, how did you make the DC into AC?

[HPmuirt]

Suitably impressed

Thanks Andy, I am glad finally someone is impressed (unlike Fatty who wouldn't recognise genious even if/when I run over his foot with my Coupe ) as I was rather chuffed with my work.

Cheers n

Si

[Sonic]

Suitably impressed

[HPmuirt]

Step-up transformer? Anything less and i wont be impressed, Si

So, impressed Sonic?

Cheers n

Si

[HPmuirt]

I'm sure that Skull is using a flip-key on his Compi

I think he has, but has he managed to sqeeze the Scorpion 918 alarm fob into it as well?

Image of key transformer solution now added to post above

Cheers n

Si

[Error404]

I'm sure that Skull is using a flip-key on his Compi

[HPmuirt]

He's sourcing the remaining 1.5V from Einstein spinning in his grave

Step-up transformer? Anything less and i wont be impressed, Si

You think I can make a step-up transformer in the key?......are you mad?......



....Damn - spot on

Key 4.jpg
Voila - a tiny transformer

Cheers n

Si

[KaraK]

How are you running a 3V LED on a single 1.5V battery?

He's sourcing the remaining 1.5V from Einstein spinning in his grave

[Dan]

What surprises me, is that no one asked how I am running a 3V LED on a single 1.5V battery :mischeif: