Build Your Own Arcade Controls Forum

Arcade Collecting => Miscellaneous Arcade Talk => Topic started by: Sarver Systems on January 29, 2014, 10:55:54 am

Title: GE 1895 bulb to LED conversion question
Post by: Sarver Systems on January 29, 2014, 10:55:54 am: I'd like to switch over a Whirly Bird 1969 Midway Whirly Bird (http://www.youtube.com/watch?v=BuiHUVvQLVI#) from GE 1894 bulbs to LEDs.

Most of the bulbs are GI lighting, while a few light and stay lit for a few minutes at a time.

Am I going to have issues with flickering?

GE 1895 are 12V bulbs, not the standard 6.3V use in pinball machines.
Title: Re: GE 1895 bulb to LED conversion question
Post by: Sarver Systems on January 29, 2014, 11:34:45 pm: The circuit is 12VAC, if that matters.
Title: Re: GE 1895 bulb to LED conversion question
Post by: ed12 on January 30, 2014, 12:25:47 am: do a google search
i found a boat load of them

ed
Title: Re: GE 1895 bulb to LED conversion question
Post by: Sarver Systems on January 30, 2014, 09:54:10 am: Oh, I'm not worried about trhe availability of them. I'm worried that they'll flicker and look like crap since they don't have any of the built-in circuitry that the pinball LEDs have.

Maybe I should add a rectifier bridge to convert the 12VAC to 12VDC?
Title: Re: GE 1895 bulb to LED conversion question
Post by: ed12 on January 30, 2014, 11:13:39 am: no saver system
u can get them were they run off of a/c
i just forget where off the top of my head
will chk my fav list ltr

ed
Title: Re: GE 1895 bulb to LED conversion question
Post by: lilshawn on January 31, 2014, 02:07:51 pm: you can actually get LEDs made for AC systems...they will have 2 LED's (or 2 dies in one case) wired in reverse to each other. one is off while the other is on...and vice versa. the flicker is unperceivable.
Title: Re: GE 1895 bulb to LED conversion question
Post by: Sarver Systems on January 31, 2014, 02:22:42 pm: I ordered the 12VDC car LEDs off Ebay. I got a reply from Great Plains Electronics on what to do if they flicker.

I'll be switching the circuit over to 12VDC via a bridge rectifier, voltage regulator, and filtering capacitor.

Time will tell!
Title: Re: GE 1895 bulb to LED conversion question
Post by: lilshawn on January 31, 2014, 07:28:35 pm: ^^^^^^^^^^^^^^^^
this.

this could be your best option. you'll have to check the circuit and see how it's switched. if it's just a relay, throw a bridge on there and a 2000 uf cap on there and you'll never know it's been modded. I wouldn't bother with a regulator. for a 12 volt regulator you need about 16 volts (at full load) to get proper 12 volt regulation.

12 volt car LED's will be good from 9-15 volts (as charging systems can vary) i'd just rectify 12vac to 12vdc and smooth with a cap and whatever you get, call it good.