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    Radio Shack 61-1065 Digital Timer User Maual

    As a senior manufacturing engineer, my job was to keep stuff running while innovating for constant manufacturing cost decreases. Came from a poor background and a single Mom, never had all the stuff kids have today. But I didn't know I was poor. Always made things and fixed items that broke...
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    Radio Shack 61-1065 Digital Timer User Maual

    shrtnd: Again thanks. Checked e-bay and purchased new old stock in box with manual for $21.00. I had been looking on e-bay and this showed up today. thanks... Tom
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    Radio Shack 61-1065 Digital Timer User Maual

    shrtnd: Thank you for your comments. I have looked about everywhere I could think of on the internet and have found nothing. Interesting about the new old units you found and I hadn't thought of that. Might give that some thought and take you up on the idea. Thank you for responding. Never...
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    Radio Shack 61-1065 Digital Timer User Maual

    Can anyone advise where I can obtain a copy of the instruction manual for the Radio Shack 7 day Digital Timer 61-1065? Thank you... Tom
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    Placement of Ammeter in Active LM338 Regulator

    Gentlemen. Thank you for responding... AS SHOWN BY "B" - I have 4 home built regulated power supplies. Two were recently completed with the LM338 fed by a 4 amp 12vac transformers.. Running engines on an 0-scale model railroad, even multiple headed, the maximun current read 1.5 amps with...
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    Placement of Ammeter in Active LM338 Regulator

    Just having built two 0-13V regulated power supplies and having excellent results with the LM338 regulator, I need to upgrade two older units built with the LM317 in order to get more than 1 amp of output. I have a question on the proper placement of the Ammeter. I understand that the ammeter...
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    Oscilloscope Reticle Alumination Miniature Lamp Availability

    Gentlemen: I have a Phillips PM3335 Scope that has a blown miniature reticle illumination lamp. The number of the existing lamp is M6628V 80Ma. There are lamps on e-bay that look the same, are 28volts but are rated at .04 Amps. I see others from various sources that have ratings of 1 Amp...
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    Transformer Current Output

    Bluejets: Thank you. This is great information. Except, mine doesn't have all that rust on it.
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    Transformer Current Output

    Some very helpful information here. If the below doesn't mean anything to anyone here, I will try the Power resistor technique..Thank you. However: Removed the transformer from the enclosure and found this: LEI Logo in a circle, and 60LEIB-002? Anyone?
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    Transformer Current Output

    No markings... That's the issue. thanks...Tom
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    Transformer Current Output

    Can anyone advise how I can determine (measure or calculate) the current output (in Amps) of a small 120vac/12vac transformer?
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    LM338 Voltage and Power Questions

    I have the switch located on the hot line, the one with the Hot oriented prong plug. The schematic is not drawn correctly, as I referred to in my first response but not precisely communicated.
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    LM338 Voltage and Power Questions

    Sorry, a little confused here. My fuse is connected to the mains hot line via a non reversible 110 volt plug. If the fuse blows, the hot line is disconnected. Can you show me a schematic of what you are describing as a better way to be safe? Thank you... Tom
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    LM338 Voltage and Power Questions

    The Difference between pure regulated DC and Digital output. Interesting...
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    LM338 Voltage and Power Questions

    You caught me. The lamp is a 110V neon and is on the mains side..Duhhh.... Thanks...Tom
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    LM338 Voltage and Power Questions

    Yes, I agree but: I found the TO3 to be unobtainable unless I wanted Bulk for too much money. I tried the oversea's versions and had issues. Settled on the Lesser TI made ones I could find. Thank you... Tom
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    LM338 Voltage and Power Questions

    Gentlemen: Finally, completed my two Model Railroad Regulated Power Supplies. I owe a great deal of thanks to all those on this forum that assisted me in completing them. As you might recall, my 1 Amp power supplies always seamed a little anemic. I needed to go to the LM338 for up to 5A...
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    LM338 Voltage and Power Questions

    Yes, the 110volt schematic of the MPJ transformer is correct. If power in equals power out, can I assume that the 4 amps on the 24volt secondary will remain as 4 amps on the output if I use the 12volt center tap?
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    LM338 Voltage and Power Questions

    Thank you Dave9: I will continue to build and test per this 12VAC recommendation. Will advise of the results. Thank you for continuing on this.
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    LM338 Voltage and Power Questions

    Instead of lowering the transformer output (starting to get a bit confusing), what if we go back to basics from the standard TI lm138/LM338 literature and work with the original 24volt output at 4 amps. From: Vout=1.25(1+R2/R1) + Iadj×R2 Where: R1=240 R2=2500potentiometer. Most suggested...
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