& Links to Wikipedia© Entries on the Subject
ALTERNATING CURRENT (AC)
An electric current that reverses direction in a circuit at regular intervals.
External Link: http://en.wikipedia.org/wiki/Alternating_current
ANSI -- American National Standards Institute
Used here to refer to standardized sizes for faceplates.
External Link: http://en.wikipedia.org/wiki/American_National_Standards_Institute
A device that is designed to operate continuously without rest.
Measured flow of electrons through an electrical conductor. Normally measured in amperes.
External Link: http://en.wikipedia.org/wiki/Electric_current
DIRECT CURRENT (DC)
An electric current flowing in one direction.
External Link: http://en.wikipedia.org/wiki/Direct_current
FAIL SAFE (RS)
A device that is normally open and locks when power is applied to the unit. Often listed as “RS”
External Link: http://en.wikipedia.org/wiki/Fail_safe
A device that is normally closed or locked until power is applied. Example: During a loss of power the device remains locked.
A device that is placed in the path of energy that will break the circuit if the current becomes too great. This is accomplished by having a strip or metal that will melt when the current exceeds the required amount.
External Link: http://en.wikipedia.org/wiki/Fuse_(electrical)
A device that is designed to operate for a short period of time;
generally less that 45 seconds.
The contacts of a switch or relay are normally open or not connected. When activated the contacts close or become connected. EXAMPLE: A switch is not depressed and the circuit is not complete.
The contacts of a switch or relay are normally closed or connected. When activated the contacts open or become disconnected. EXAMPLE: A switch is not depressed and the circuit is complete.
The measure of resistance of an electrical device to resist the flow of energy.
See our Basic Electronics Page.
A device that is commonly used to convert AC to DC. Commonly used to silence the audible sound that an electrical strike can make while energized on AC current.
External Link: http://en.wikipedia.org/wiki/Rectifier
An electro-magnetic device activated by a variation in conditions in one electric circuit and controlling a larger current or actuating other devices in the same or another electric circuit.
External Link: http://en.wikipedia.org/wiki/Relay
12 and 24 DC Voltage is standard -- Must specify when ordering strikes
Most light commercial Electric door strike supplied with magnetic coils: 4-6VDC/8-16VAC. Electric door strikes supplied with a solenoid coil: 6-10VDC, 10-16VAC: other voltages available.
A device consisting essentially of two or more coils of insulated wire that transfers alternating current by electro -magnetic induction from one winding to another at the same frequency, but usually with changed voltage & current.
External Link: http://en.wikipedia.org/wiki/Transformer
A unit of electric potential equal to the difference of electric potential between two points that have a resistance of one ohm and through which a current of one amperes is flowing.
See our Basic Electronics Page.
We recommend the following wire sizes:
|Up to 50 ft.||18 AWG||20 AWG|
|51-150 ft.||16 AWG||18 AWG|
|151-300 ft.||14 AWG||16 AWG|
|301-600 ft.||12 AWG||14 AWG|
The power developed in a circuit by a current of one ampere flowing through a potential difference of one volt.
External Link: http://en.wikipedia.org/wiki/Watt