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2. 78xx - Wikipedia

   en.wikipedia.org/wiki/78xx

   When the input voltage is significantly higher than the regulated output voltage (for example, powering a 7805 using a 24 volt power source), this inefficiency can be a significant issue. [11] Buck converters may be preferred over 78xx regulators because they are more efficient and do not require heat sinks, though they might be more expensive.

3. Jump wire - Wikipedia

   en.wikipedia.org/wiki/Jump_wire

   Stranded 22AWG jump wires with solid tips. A jump wire (also known as jumper, jumper wire, DuPont wire) is an electrical wire, or group of them in a cable, with a connector or pin at each end (or sometimes without them – simply "tinned"), which is normally used to interconnect the components of a breadboard or other prototype or test circuit, internally or with other equipment or components ...

4. Linear regulator - Wikipedia

   en.wikipedia.org/wiki/Linear_regulator

   Often, the last two digits of the device number are the output voltage (e.g., a 7805 is a +5 V regulator, while a 7915 is a −15 V regulator). There are variants on the 78xx series ICs, such as 78L and 78S, some of which can supply up to 2 A. [ 4 ]

5. No One Around with Spare Jumper Cables? Keep One of These ...

   www.aol.com/lifestyle/editor-approved-portable...

   8-In-1 Portable Jump Starter and Power Bank. This chunky portable jump starter is equally as useful in an emergency if you need to revive a dead battery while charging mobile devices.

6. Jump start (vehicle) - Wikipedia

   en.wikipedia.org/wiki/Jump_start_(vehicle)

   Jumper cables should not be used to interconnect between different voltage systems; for example, connecting 6V and 12V systems together may cause damage. [5] If the dead battery is physically damaged, has a low electrolyte level, is decayed or frozen, a jump start will not repair the battery. A vehicle with a frozen battery should not be jump ...

7. List of LM-series integrated circuits - Wikipedia

   en.wikipedia.org/wiki/List_of_LM-series...

   Dual ±15-volt voltage regulator [65] LM330 5-volt positive voltage regulator, 0.6 V input-output difference [66] LM333 Yes Adjustable 3 A negative voltage regulator (-1.2 V to -32 V) [67] LM137 LM237 LM337 Adjustable 1.5 A negative voltage regulator (-1.2 V to -37 V) [68] LM138 LM338 Adjustable 5 A voltage regulator (1.2 V-32 V) [69] LM140 LM340