[TMC] Lamps

Roy Morgan k1lky68 at gmail.com
Mon Jul 14 11:47:55 EDT 2014


On Jul 12, 2014, at 4:32 PM, Larry <Telegrapher at Q.com> wrote:

> Anyone know of a source for the 3S6 3W 120V lamps that go in the power supply of the PAL-500/350? ... They lamps have the double button on the bottom and are the B15 base bayonet style. 


Larry,

My Google search turns up many hits for the screw in similar lamp.

But these guys seem to the double contact bayonet lamp for 53 cents each:
<https://www.1000bulbs.com/product/1090/IN-0003S65DC120.html?utm_source=SmartFeedGoogleBase&utm_medium=Shopping&utm_term=IN-0003S65DC120&utm_content=DC+Bayonet+Base+S6+and+S11+Indicator+Lamps&utm_campaign=SmartFeedGoogleBaseShopping&gclid=COPyyN6Qxb8CFUYA7AodSmEAmA>

(Shipping charges not checked.)

May I offer my Morgan’s Law of Inverse Perversity about spares for your consideration:

Morgan's Law of Inverse Perversity:

If you have no spare for a critical part or tube, that part will fail at the most inopportune time.  
If you do have a spare, or spares, the original one will never fail and you'll never use the spare.

Further comments:

1) Just the right 2 watt resistor in series with the lamp will make it last essentially forever.
2)  Order a dozen or so.  If you store them close to or in the power supply, their presence will influence the running lamp to  run forever.  (Yes, it is a kind of magic.)
3)  If you find a spare power supply for the PAL-350, I will be very tempted to pay shipping.
4)  Grainger would charge you $6 for the screw in similar lamp
5)  Is it Mouser who has no shipping charges?

Roy
Whose supply-less PAL-350 may remain forever cold.


Roy Morgan
RoyMorgan at alum.mit.edu
K1LKY Since 1958



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