bigal_scorpio
Active Member
Hi to all,
I am trying to make a lighter that was broken work again.
It used to be a touch sensitive one and that part of the circuit died. However I have found another old lighter that has a similar battery powered sparking mechanism but leaked, so I am cannibalising that one for parts.
The only thing is that the second lighter was sparked by a switch, a standard sub microswitch in fact. and using all 3 contacts.
I have made a tiny touch senstive circuit using a darlington transistor and a couple of resistors but I can't figure out how to integrate it into the lighters spark circuit since I only have the grounding effect of the darlington to play with.
I need to make something which will emulate the 3 contacts of the microswitch but take very little room. The whole circuit is dead until opening the lighter closes a separate switch from the battery so there is no need to worry about any drain when not opened.
Any ideas would be much appreciated, but remember I need to keep this small.
Thanks Al
PS I have posted my poor effort at drawing the circuit in "paint", I know its a bit rubbish but I don't have anything else to draw it out with.
I am trying to make a lighter that was broken work again.
It used to be a touch sensitive one and that part of the circuit died. However I have found another old lighter that has a similar battery powered sparking mechanism but leaked, so I am cannibalising that one for parts.
The only thing is that the second lighter was sparked by a switch, a standard sub microswitch in fact. and using all 3 contacts.
I have made a tiny touch senstive circuit using a darlington transistor and a couple of resistors but I can't figure out how to integrate it into the lighters spark circuit since I only have the grounding effect of the darlington to play with.
I need to make something which will emulate the 3 contacts of the microswitch but take very little room. The whole circuit is dead until opening the lighter closes a separate switch from the battery so there is no need to worry about any drain when not opened.
Any ideas would be much appreciated, but remember I need to keep this small.
Thanks Al
PS I have posted my poor effort at drawing the circuit in "paint", I know its a bit rubbish but I don't have anything else to draw it out with.
Attachments
Last edited: