Interest in 3volt microswitch latching circuit
- Thread starter tonyb
- Start date
unnerv
Enlightened
yes, how much and where? Will it be able to switch higher voltages and operate on higher than 3v?
Illuminated
Enlightened
I'm interested - what's the "on" state resistance, and could you give approx. dimensions?
I've been wanting to build something like this for a while now...
Thanks - John
I've been wanting to build something like this for a while now...
Thanks - John
IsaacHayes
Flashlight Enthusiast
A bi-stable flipflop? Hmm. 5 pico-amps? Able to handle high current?
Would it be able to have double throw? So say you got full power, enable it, it breaks a connection, and makes a new one with resitance for dimming the lux?
Does it require pos and neg connections?
One of these with a reed switch in a mag where the switch cam was would be great dimming feature. Turn it on, and move a magnet by it once, it goes into dim mode. Move the magnet by again, it's full bright!
Or build a waterproof magnet activated light....
Only problem is, I can't find reed switches anywhere.. Unles probably bulk order /ubbthreads/images/graemlins/icon15.gif
Another good switch would be a small TACT switch that is found behind buttons on stereos and VCR's... I have a bunch of these from an old 80's VCR I took apart. it had a TON of adjustable buttons with TACT switches.. They are like 5mm diameter squares... They have some what of a click to them too.. You could build a small light with one of these and have the switch by the head and not take up much room at all.
Would it be able to have double throw? So say you got full power, enable it, it breaks a connection, and makes a new one with resitance for dimming the lux?
Does it require pos and neg connections?
One of these with a reed switch in a mag where the switch cam was would be great dimming feature. Turn it on, and move a magnet by it once, it goes into dim mode. Move the magnet by again, it's full bright!
Or build a waterproof magnet activated light....
Only problem is, I can't find reed switches anywhere.. Unles probably bulk order /ubbthreads/images/graemlins/icon15.gif
Another good switch would be a small TACT switch that is found behind buttons on stereos and VCR's... I have a bunch of these from an old 80's VCR I took apart. it had a TON of adjustable buttons with TACT switches.. They are like 5mm diameter squares... They have some what of a click to them too.. You could build a small light with one of these and have the switch by the head and not take up much room at all.
eluminator
Flashlight Enthusiast
Digikey.com sells reed switches, and you can buy 'em one at a time if you want. The shipping charges will eat you up though. /ubbthreads/images/graemlins/smile.gif
IsaacHayes
Flashlight Enthusiast
Yeah, that's a problem....
IsaacHayes
Flashlight Enthusiast
I meant use this in conjuction with the stock mag switch. The flip flop would toggle resistance via waving a magnet over the mag light...
ViReN
Flashlight Enthusiast
Hey Tony B....
Great... I never knew, that you too were onlook for such a circuit... and ultimately built one.... and making it available for sale .... can you please PM me the cost....
For me, i want to use it for a very very small current applicaiton.... 2-3 LED's overdriven using 2 CR2032 cells in series.
I am currently looking for a bi-stable (toggle) flip flop circuit probably using a CMOS Chip .. & FET .... I also do have choices of using a SCR ... etc.. but those will involve use of 2 switches... and that is EXPENSIVE... in terms of space....
BUT, if you are selling it, and if it is cost efficient... i wouldnt bother to design it again... I would rather just buy it from you /ubbthreads/images/graemlins/smile.gif
Also, For the 2 boost transistor circuit... its truely amazing.. it really impressed me.... I think Dimmalux 3000 (patent pending).. is also a similar circuit (may be a regulated one... & using some SMD Components instead of transistors) ....
I modified the value of inductor to 22 uH to drive 3 LED's in parallel from a 1.5 V AA Source. .... and they are atleast 2 times bright as a photon freedom. /ubbthreads/images/graemlins/smile.gif
Hope you have seen my first ever ("Official") MOD.... Here's a link.... if you want to view... This one /ubbthreads/images/graemlins/smile.gif the orignal circuit... that you have designed
My First Ever Official Mod 1.5 V, Switching, 3 LED .. Hope You like seeing your designed circuit finding applications /ubbthreads/images/graemlins/smile.gif
Thanks & Regards,
ViReN
Great... I never knew, that you too were onlook for such a circuit... and ultimately built one.... and making it available for sale .... can you please PM me the cost....
For me, i want to use it for a very very small current applicaiton.... 2-3 LED's overdriven using 2 CR2032 cells in series.
I am currently looking for a bi-stable (toggle) flip flop circuit probably using a CMOS Chip .. & FET .... I also do have choices of using a SCR ... etc.. but those will involve use of 2 switches... and that is EXPENSIVE... in terms of space....
BUT, if you are selling it, and if it is cost efficient... i wouldnt bother to design it again... I would rather just buy it from you /ubbthreads/images/graemlins/smile.gif
Also, For the 2 boost transistor circuit... its truely amazing.. it really impressed me.... I think Dimmalux 3000 (patent pending).. is also a similar circuit (may be a regulated one... & using some SMD Components instead of transistors) ....
I modified the value of inductor to 22 uH to drive 3 LED's in parallel from a 1.5 V AA Source. .... and they are atleast 2 times bright as a photon freedom. /ubbthreads/images/graemlins/smile.gif
Hope you have seen my first ever ("Official") MOD.... Here's a link.... if you want to view... This one /ubbthreads/images/graemlins/smile.gif the orignal circuit... that you have designed
My First Ever Official Mod 1.5 V, Switching, 3 LED .. Hope You like seeing your designed circuit finding applications /ubbthreads/images/graemlins/smile.gif
Thanks & Regards,
ViReN
idleprocess
Flashaholic
There's a surplus electronics store not too far from me with a handful of reed switch models in stock. They're not terribly compact, but could probably be accomodated in a D maglight easily.
ViReN
Flashlight Enthusiast
Hello Idle Process,
Thanks for the response....
I am on a look for a very verrry small switch.. that can be accomodated in lets say 3 sq mm or up to 6 sq mm (the electronics) .... and then ofcourse there is a NO switch to activate the electronics...
small cmos chips.... + probably a FET (lo voltage) ... some thing like that....
Thanks & Regards,
ViReN
Thanks for the response....
I am on a look for a very verrry small switch.. that can be accomodated in lets say 3 sq mm or up to 6 sq mm (the electronics) .... and then ofcourse there is a NO switch to activate the electronics...
small cmos chips.... + probably a FET (lo voltage) ... some thing like that....
Thanks & Regards,
ViReN
