T&L Publications

If he was insisting it all had to fit in the same battery pack, then you probably did the only reasonable thing. If you had more space, 2 Li-Ion with a buck boost regulator stuffed in the third slot might have worked but those cells are too large to fit. Did you weld on the tabs or just drop in?

Maybe not applicable to classwork because they lack a detailed lesson plan but there are some great electronics kit companies out there, either PCB level assembly kits or assembled modules you can piece together, SMT and thru hole versions. Most sell on ebay and amazon then you can figure out their ...

the new circuit is better because it switches power at the primary side of the transformer turning off all power while the first circuit had a design defect allowing half of the circuit to stay powered. in the first, the switch effectively cut the power in half but it was always sufficient to light ...

its a perfectly reasonable way but does not provide as much safety factor as it would if you put a regulator in between. For example if the LED fails and goes open circuit, the full voltage will be across its terminals. 62VDC is safe but 62VAC might give a little zap if it were under 40V I would sug...

unsigned 16 bit means all 16 bits contribute to the value, in signed, the MSB indicates negative or positive. your link seemed to lead to a datasheet page, I don't want to find the relevant section you are referring to but I suppose you are seeing a programatical (code) example of how to do binary m...

a 32GB or 64Gb memory card can hold more than 100 DCs of music easily. There may not be many services that allow people to upload and stream their music due to copyright laws. The liability to a service that you might use your streaming service as a free broadcast radio station is high and that may ...

the fan is probably controlled by a thermocouple. It may be open or inaccurate and not allowing the fan to turn on or the PWM fan controller is dead. If yu want to keep variable speed, an easier fix might to be to hotwire the fan with an off the shelf Fan controller intended to be installed in a PC....

Mill-max has some spring pins (pogo pin style) in plastic strips, the omniball is specifically designed for this application https://www.mill-max.com/products/new/omniballtm-spring-loaded-contact https://www.mill-max.com/products/new/omniballtm-spring-loaded-contact-options if you want stamped and f...

Ask at your local library if they can locate them on microfilm. Its a long shot but that's the way it was done before the internet. Someone probably did but locating the films and the person who remembers they exist might be a trick.

you'll run in circles trying to rid electrical noise by modifying the "Safety Grounding" since the ground of concern is the "Signal Ground" comprised of the shield in the Coax cable. All that other stuff is only to protect you from electrical shock in the event of a fault or ligh...

for RCA connectors or 3.5mm jacks and low level signals, a "ground loop isolator" transformer works very well, this comes up a lot in Car audio connecting head units to amplifiers when relying on chassis for ground. lots on amazon or ebay etc. Just install it in series at either end, it do...

are there any markings on that wire? Much of that construction is for flexibility and shielding, probably any cable with the right number of conductors could be substituted with some mechanical compromise. USB C cables probably have a compatible combination of conductors and flexibility, some USB mi...

my last test was on a solitary 20A outlet with a 3 foot run the main panel, no voltage drops there

My bet is damaged coil, shorted or open, who cares at this point. Darn, I just realized I forgot to put it on the curb Wednesday with the other metal junk, he can have it next time.

I'm scrapping that compressor. It has oil in the pump, it never went dry but may have begun break down, I never replaced it. For some reason the motor stall torque has gone way down. I did change the cap but stopped short of replacing the pressure switch when I observed it could not pump more than 5...

I did get some 10 gauge I plan mostly to use with crimp connections but it seems that I should be able to solder this using lead free SAC solder alloy that contains some copper already to help prevent the thin copper cladding from dissolving in the solder. There may be other solder alloys that can w...