*I began my career by taking apart my mother's radios and televisions. I stayed to myself, played with hammers, nails and wood in her basement.
My highest grade of diploma was the 8th. I went on to college via a GED and graduated none of the 3 colleges I attended.
I am a stationary electrical systems engineer that met all the requirements as set forth by the state of MD via IBM & Grubb & Ellis
I say this to tell you, "Let no one's negative / destructive opinion of you have meaning". A "friend" nurtures your wildest dreams while most that you commonly socialize with will do nothing but knock you. Misery and ignorance are lonely, don't be their company.
I'm getting ready to depart for Asia where I'll sit with the heads of departments at technical universities to sell the "ideas" conveyed in the last 4 or 5 posts. I may also visit S Korea and do the exact same thing.
No matter who you are, find your passion, find your love and make it profitable.
Let's begin where this blog began: Oct 2015'
"Just for Us"
Contents
[hide]- 1 What is AC voltage?
- 2 AC voltage safety
- 3 What is low voltage?
- 4 What is DC voltage?
- 5 Electric DC polarity: plus and minus
- 6 Electric current ampere
- 7 Electric voltage
- 8 Adapter with different connectors
- 9 What is an electrical short?
- 10 Electrical short with (dis)connecting device
- 11 Car cigarette lighter plug
- 12 See also
- 13 Interwiki links
What is AC voltage?
AC voltage is voltage that does not have a Plus and Minus terminal on the supply.
AC voltage symbol: 
Other names for AC voltage:
- Directed power or voltage
- Sine wave power or voltage
- Inverter type of power or voltage
AC voltage safety[edit]
AC electricity with a voltage less than 50 V (RMS) is called Extra Low Voltage. This voltage is unlikely to give a human being a dangerous electric shock.
What is low voltage?[edit]
Other names for low voltage:
- Shock free power or voltage
What is DC voltage?[edit]
DC voltage is voltage that has a Plus and Minus terminal.
DC voltage symbol: 
Other names for DC voltage:
- DC power or voltage
- Battery type of power or voltage
- Plus-minus power or voltage
Electric DC polarity: plus and minus[edit]
For most kinds of devices it is important to have the right voltage and polarity. Wrong voltage or polarity can destroy a device
How to mark the plus or to find the plus pole:
- Red is always plus.
- Painted line on the plus wire, no painted line on the min.
- Square wire is plus, round wire is minus.
- Sharp edge is plus, round wire is minus.
- Knot is plus, no knot is minus.
- Mark on the plus wire, the plus wire is special.
- and so on, the plus wire is special or not normal than a normal wire.
These must be in good working order to save your electric material:
- The voltage.
- The amperage.
- The plus and minus position.
- The type of power, AC or DC.
- The type of low voltage coax connector.
- Protect your plug and connector against mechanical pulling force.
- Take your time to check these 6 items.
