Relay Electrical Diagram. Select libraries from electrical engineering section. As relay diagrams show when a relay contact is normally open no there is an open contact when the relay is not energized.
And close the contact a to b and c to d. Interconnecting wire routes may be shown approximately where particular receptacles or fixtures must be upon a common circuit. It can be used for various switching.
The braided bonding strap provides a good electrical connection between the armature and yolk rather than relying on contact between the armature pivot point alone.
And close the contact a to b and c to d. Electromechanical relays may be connected together to perform logic and control functions acting as logic elements much like digital gates and or etc. In short a phase comparator compares two input quantities in phase angle vertically irrespective of the magnitude and operates if the phase angle between them is 90o. Contacts time delay after coil normally open normally closed normally open normally closed relay etc.