Difference between revisions of "DR6"

From Noisebridge
Jump to: navigation, search
(green light 🚥)
 
m (parts)
Line 1: Line 1:
 +
<br/>
 +
<br/>
 
<br/>
 
<br/>
 
<br/>
 
<br/>
Line 12: Line 14:
  
 
Inside of dismantled green arrow unit https://photos.app.goo.gl/PPONnfMPILU6VcAV2
 
Inside of dismantled green arrow unit https://photos.app.goo.gl/PPONnfMPILU6VcAV2
 +
 +
Under the hood there is quite a bit of circuitry given that this is a "dumb light" controlled externally by being flipped on and off. This is at the least a complex constant current supply with a fairly high power factor. Later models include compensation for continuous brightness after years of use and environmental monitoring and compensation features.
 +
 +
*LM2903N Comparator, Dual, Low Offset Voltage
 +
**http://www.onsemi.com/pub/Collateral/LM393-D.PDF
 +
*MC34262 Power Factor Controller
 +
**http://www.onsemi.com/pub/Collateral/MC34262-D.PDF
 +
*STP5NK80Z N-channel 800V 1.9Ω 4.3A TO-220 Zener-protected SuperMESH™ Power MOSFET
 +
**http://www.st.com/content/ccc/resource/technical/document/datasheet/ec/19/e1/cc/25/c2/4c/18/CD00003038.pdf/files/CD00003038.pdf/jcr:content/translations/en.CD00003038.pdf
 +
*MPSA42 High Voltage NPN Transistor
 +
**https://www.onsemi.com/pub/Collateral/MPSA42-D.PDF
 +
*TN2404KL 240V N Channel MOSFET
 +
*X2 Capacitors, MOV, Zeners, Diode Bridge, Fuses

Revision as of 08:22, 19 July 2017





🚥
GELcore aka GE Lighting aka current powered by GE model of traffic signal light designated DR6. This is documentation of units pulled from roughly a decade of active service.

As of 2013 GE offers it's 14th version of it's LED based light bosting over 6,000,000 sold world-wide

These were previously developed to conform to NEMA TS-2-1992, or the second revision of teh "Traffic Control" standard "TS-1", "TS-2" has since been updated, and super-seeded.

Inside of dismantled green arrow unit https://photos.app.goo.gl/PPONnfMPILU6VcAV2

Under the hood there is quite a bit of circuitry given that this is a "dumb light" controlled externally by being flipped on and off. This is at the least a complex constant current supply with a fairly high power factor. Later models include compensation for continuous brightness after years of use and environmental monitoring and compensation features.