T&L Publications

You have done your math right. I suppose (1) 1/4 watt resistor and (2) 1N400x diodes could be squeezed into that housing.Would be poor engineering though and more like a product you would expect to find at you local Walmart

ThomasaNet- Wow-Bayonet base? Any one priced a holder for those recently, its very expensive. Others- The neons have these beat trifold in power reduction. Why do they have the nerve to categorize these as GREEN! Don't know how they drop AC resistively (as advertised) as it would take a hefty power ...

Exter

Take a look at the CD4026 and see if that will work in your plan.

Bob & Exter I think the circuit intended to be - the "ground" symbol really being a "common" for the DC output only and not a power line ground. This way it will work. But I agree that this is a very dangerous and misleading print for someone not well versed on standard resid...

The 12-0-12 denotes a 24V center tap transformer. VA is volt x amperes and disregarding minor magnetic losses if used with a purely resistive load,you can roughly consider it as the wattage rating it can handle. In your case 10 va and 24v, you have a 415 ma current rating (simple Ohms law). Look at ...

The "C" in either family just denotes that it is CMOS technology versus bipolar in the 74SN family. The added H as in HC tells you that it is High speed CMOS. This would be an advantage in very high speed data rate equipment. I am sure your device doesn't even need the xtra speed that the ...

"3) ETE: The Brits are onto something here. The articles about "ratting" components from old gear and tutorials on pure analog are special treat. It's pricey, but I enjoy it." Kheston - Would that be EPE Magazine (Everyday Practical Electronics). If so, I agree it is a very exiti...

yes
the trigger level and noise margins are somewhat different in each. But either will usually be interchangeable in non critical circuits and work fine. From an initial design stand point I have never done this but I have swapped them in existing designs often with no bad side affects.

Doesn't look like you would need any special specs here. One thing of concern may be the temperature rating of the cap since it would be internal to the engine block ( at least all the mags I am familiar with). Maybe try standard power line filter type caps such as the "X" and "Y"...

Oscillator , amplifier or filter? Is stability important? Is rise, fall time of pulse critical?

MrAl About $13, but you still have to supply your own standard wall switch plate. For $3 in parts(DP four position rotary switch and knob) one could save $10 by merely transposing the fan capacitors to the wall box. However at present , time does not permit. I have 3 more fans to install this winter...

Well picked up a fan speed control at HD today. Tore it apart and checked it out. To my amazement it's caps were the exact value I needed. Must be the standard value of many brands. Popped it in the wall and case closed

Lemp VERY WELL PUT! It is sad the demise of electronics as a hobby and for many of the reasons you stated.Their is no hobby level test equipment currently produced that even comes close to a hobbyist's budget, although E-Bay has some expensive but doable items still available. For personal use, I ha...

"All the fans I've seen (and since I do handyman stuff for a living now, I seen lots of them) have three-wire caps -- dual caps. Running wiring through ceiling and walls for the cap only is pure nuts. First of all, it has to be Romex to be "legal" for 120v use. Second, it would be wei...

If the control was variable, it has to be a phase chopping device-i.e. a run of the mill light dimmer. Stay away from this for your ceiling fan. The 3 or 4 step capacitor switch is the only way to go. The current research I have done shows no fans drawing even one amp so power is not an issue. The f...