Basically, controlling electrical equipment 220 Volt Alternating Current (AC) with Delphi through parallel port using Small Port component has similarities with the article entitled controlling the Light Emitting Dioda (LED) flame with Delphi through parallel port which can be accessed CLICKHERE. The difference is on the Hardware which is used. In this case, the series is replaced with transistor series as electrical switch which able to activated and non-activated relay with 12 volt DC/220 volt AC. The series which able to replace LED is as follows:
Figure. Series of Controlling Electrical Equipment with 220 Volt Alternating Current (AC) With Delphi through Parallel Port Using Small Port Component.
The Component listed Below:
| No | Component Name |
| 1 | Dioda 1N 4001 |
| 2 | Resistor 2,2K Ω |
| 3 | Transistor BC 107 |
| 4 | Vcc 12 Volt DC |
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