Electronic component | Circuit symbol | Description |
---|---|---|
wire | used to connect one component to another. | |
joined wires | one device may be connected to another through wires. This is represented by drawing "blobs" on the point where they are shorted. | |
unjoined wires | when circuits are drawn some wires may not touch others. This can only be shown by bridging them or by drawing them without blobs. But bridging is commonly practised as there will not arise any confusion. |
Elecronic component | Circuit symbol | Description |
---|---|---|
DC supply | used as a DC power supply i.e. the current will always flow in one condition. | |
AC supply | used as AC power supply i.e. the current will flow in both the directions, alternating between the two. | |
Fuse | used in circuit where there is a probability of excessive current flow. The fuse will break the circuit if excessive current flows and saves the other devices from damage. | |
Transformer | Abbreviated as "T", used as an ac power supply, consists of two coils - the primary and secondary that are linked together through an iron core. There is no physical connection between two coils. The principle of mutual inductance is used to obtain power. | |
Earth/Ground | used in electronic circuits to represent the 0 volts of the power supply. It can also be defined as the real earth, when it is applied in radio circuits and power circuits. |