relay, the far side of the relay, which holds the switch, will snap shut allowing the circuit to be complete. Here is a picture of me prototyping a simple circuit with a relay.
I had power flowing in through a switch that when pressed would snap shut and supply power to the other LED connected. This particular relay was too big for my bread board so I had place it in a manner and hold it down so it doesn't pop off the board.
To the left is the same relay and circuit with the addition of a small capacitor. When the momentary switch is unpressed, the capacitor supplies power briefly to the relay keeping the circuit closed for a very short time. I've learned that relays have their advantages. They can be used in both A/C and D/C circuits, handle larger voltages, and can have multiple contacts. The disadvantages of a relay are they require more power to use, quite large for small circuits, and can't switch quickly unlike transistors.
No comments:
Post a Comment