[NJARC] Clarion Call: Capacitor Program Special Order!
Matt Reynolds
mattr04 at hotmail.com
Sat Mar 7 14:08:13 EST 2015
Vintage Electronics Enthusiasts:
For those of you who were at the meeting last night, you may recall I made an announcement that the NJARC Capacitor program is going to organize a special order of capacitors that we don't normally carry. Many of you have mentioned to me in passing during meetings that you are working on a set (whether it be a radio, television, piece of test equipment, etc.) that needed a cap value that the club did not have. As most of you know many electronics supply houses have minimum order and shipping costs that may make buying those "one or two" caps you need to finish your set somewhat cost prohibitive. It is my intention to ask you all "what you need" to see if we can get a larger order together to help members save some money and get their sets up and running again! This request is limited to electronic parts (not trim\cosmetic pieces like knobs... contrary to what was said last night, we don't have a knob program today!).
Right now the most interest seems to be centered on HV television capacitors, especially for the Pilot TV-37 television. Others have mentioned they are working on Hallicrafters televisions. I know there is also interest in restoring Philco Predictas (that have common failure parts like fusistors and "network" parts, but my knowledge is limited on which parts are common failure parts).
Here is what we have been asked to order so far:
Electrolytics:
22mfd @ 600v47mfd @ 600v
Film\Poly:
.005[.0047] mfd @ 6000v (2x for Pilot TV).005[.0047] mfd @ 3000v (2x for Pilot TV).001 mfd@ 4000v (1x for Pilot TV).002[.0022]mfd @ 1000v (2x for Pilot TV).03 [.033]mfd @ 6000v (for Halicrafters TV).0015 mfd @ 1000v (1x in Philco Predicta Holiday).
Ceramic\Mica:300 pf @ 3000V (2x for Pilot TV)
If you have a cap you need that is not listed above, please reply to me with the value and I will see if we can add it to the order. The list is currently focused primarily on Electrolytic and Paper replacment caps, but I would be glad to include more Mica\Cermamic values if you have specific needs.
I am asking those of you that have electronics knowledge that surpasses mine (which should be most of you!) please assist me with looking for opportunities to combine values that we receive for this special order to maximize practicality/cost. As an example, in the list above we will likely decide to only order .005 at 6000v to cover both the 6KV and 3KV requirement for the pilot TVs (and perhaps some of the other values if the tolerances allow). The more we buy of one specific value, the cheaper the costs could be.
I especially need your help for identifying values of caps that "don't normally fail" like ceramics and micas that you need\we should consider stocking.
As a reminder, not only do we stock most standard-value electrolytic values up to 450V and poly caps up to 630V,we have a large variety of new "low volt" capacitors in stock, for those of you working on transistor-based stuff:
Package TypeCapacityWorking VoltagePriceRadial1 uF50V$0.10Radial4.7 uF50V$0.10Radial10 uF50V$0.10Radial22 uF50V$0.10Radial47 uF50V$0.15Radial68 uF50V$0.10Radial100 uF63V$0.10Radial220 uF50V$0.20Radial330 uF50V$0.25Radial470 uF50V$0.25Radial680 uF63V$0.50Radial1000 uF50V$0.50Radial2200 uF50V$1.00Radial4700 uF50V$1.75
The majority of the caps are rated at 50V, and are Nichicon branded caps. Any of the caps valued at 1 uF to 100uF should be small enough to fit in transistor radios (modern caps are usually smaller than caps from the past), and the larger ones are useful for other projects where caps rated 50V or lower are required.
As previously mentioned, If you are a member who is unable to attend NJARC meetings regularly, and are in need of specific values, I am willing to ship orders out to you assuming you cover the cost of packaging\postage.
My goal is to take requests for the next 1-2 weeks via the reflector\email\phone from you all, come up with a reasonable order that accomodates as many requests as possible, and have the caps ready by the next meeting (if possible with ordering\lead times).
Let's see what we can come up with to help each other get some more sets back on the air!
Best Regards,
Matt Reynolds
Capacitor\Resistor Program Chaircapacitors at njarc.orgresistors@njarc.org567-204-3850
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