Hi,
At the moment I'm reading up about capacitors and resistors and I get the basic part of it is for, but I'm having bit of difficulty in trying to understand the components once it interact together in a circuit. I just need some input and validation to my analysis from the expert here
Here is the circuit that I obtain from the web it is called 'Capacitor Discharge Unit'
**broken link removed**
The lines and numbering are mine to show you the flow of current that I think happens this is also to refer it easily in my observation below
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This is what I think happens when the CDU is connected
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1. The current flows through line 1 and it will keep on continue flowing through BD679
2. The current flows through line 2 and will pass through the resistor flowing through the base of the BD679 (thus allowing step 1 to happen)
3. The current flows through line 7 and will pass through normally
4. The current that was flowing pass through BD679 will also lass through line 5 and this in turns will be stored by the capacitor (both 1000u)
5. The current also flows through line 6 when it will light up the LED
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This is what I think happens when the DCU is disconnected
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The capacitor will be filling up to same 15v like the input source and once it fills up there will be no current flowing from anywhere as the wire are jam packed with electrons and this in turn will reduce the voltage which in turn will "turn off" the signal from the BD679 base. Because the base of the BD679 has not been triggered the gate will not open and this will stops the current to flow.
I need feedback to validate what I'm thinking is correct in terms on how the current flows through the circuit.
Thanks for the help