Hello
I was looking for a very simple PWM circuit to control a single 6V DC motor. I found this project, wich I think looks somehow simple.
http://forum.allaboutcircuits.com/showthread.php?t=9016
I have made only small electrical circuits, so I am not very familiar with schematics and stuff. I am from Denmark, so my english is limited, but i'll try to make everything as understandable as I can.
Well back to the circuit in the link above.
I have found these parts at my local electronic store:
1. C4093 CMOS NAND DIP14
2. Si-rectifier 50V 1A DO41 diodes
3. Potentiometer 470k
4. Cer Capacitor 3.3nF 500V P5,08 20% Z5U
5. Resistor 3W 5% 3.3K Taped
I have calculated the resistor to 3.3K. He says; "multiple your Vdd with 500" = 6V x 500 = 3000 ohms = 3.3K ohm. Hope it is right.
I have not been able to find a capacitor with 3.9nF as he uses in his circuit, but as he says, I can decrease it and get a higher freq, so I think it will work with the 3.3nF, or am I wrong about that?
Well now for the tricky part. He says that the MOSFET (I think that its something like a transmitter) needs 10V before the circuit runs well. I only have 6V, so what can I do about that? He says that if I use something else than a MOSFET, then I need a 10K resistor, but where do I put that and what is "something else"?
Hope you can help me with this
/Jacob J
PS. Do I need other parts than those 6 and the motor and power supply?
I was looking for a very simple PWM circuit to control a single 6V DC motor. I found this project, wich I think looks somehow simple.
http://forum.allaboutcircuits.com/showthread.php?t=9016
I have made only small electrical circuits, so I am not very familiar with schematics and stuff. I am from Denmark, so my english is limited, but i'll try to make everything as understandable as I can.
Well back to the circuit in the link above.
I have found these parts at my local electronic store:
1. C4093 CMOS NAND DIP14
2. Si-rectifier 50V 1A DO41 diodes
3. Potentiometer 470k
4. Cer Capacitor 3.3nF 500V P5,08 20% Z5U
5. Resistor 3W 5% 3.3K Taped
I have calculated the resistor to 3.3K. He says; "multiple your Vdd with 500" = 6V x 500 = 3000 ohms = 3.3K ohm. Hope it is right.
I have not been able to find a capacitor with 3.9nF as he uses in his circuit, but as he says, I can decrease it and get a higher freq, so I think it will work with the 3.3nF, or am I wrong about that?
Well now for the tricky part. He says that the MOSFET (I think that its something like a transmitter) needs 10V before the circuit runs well. I only have 6V, so what can I do about that? He says that if I use something else than a MOSFET, then I need a 10K resistor, but where do I put that and what is "something else"?
Hope you can help me with this
/Jacob J
PS. Do I need other parts than those 6 and the motor and power supply?