Pot Variable Resistor
Pot Variable Resistor
How do I make my variable pulse circuit have an adjustable mark space ratio?
I have built a variable pulse generator using an NE555 timer, with a 100K pot, a 1K resistor, and a .01Uf Cap. I need to make the circuit have an adjustable mark space ratio? How do I do this or where can I find out how to do this??? Thanks
By the addition of one and possibly two diodes you can control the mark/space ratio by making the charge and discharge pathways separate.
This url should give you some idea. The desired part is about half way down the page.
|
|
3386P 200 Ohm Cermet Trimmer Pot Potentiometer Variable Resistor 50 Pcs $12.18 |
|
|
50x 3386P 503 50K Ohm Variable Resistor Trimmer Pot Potentiometer $12.20 |
|
|
10pcs,105 1M OHM Variable Resistor Trimmer Pot Potentiometer 6mm $2.68 |
|
|
10pcs,105 1M OHM Variable Resistor Trimmer Pot Potentiometer $2.68 |
|
|
10pcs,105 1M OHM trimmer pot single turn variable resistor $2.68 |
|
|
10 x 20K OHM Trimmer Trim Pot Variable Resistor 6mm $2.99 |
|
|
10 x 4.7K OHM Trimmer Trim Pot Variable Resistor 6mm $2.99 |
|
|
50x 3386P 502 5K Ohm Variable Resistor Trim Pot Cermet Potentiometer $12.12 |
|
|
100x 473 47K Ohm Variable Resistor Trim Pot Potentiometer $12.12 |
|
|
50x 3386P 103 10K Ohm Trimmer Pot Variable Resistor Potentiometer $12.45 |
|
|
2 x 50 ohm 1/2W 5% Trimmer Pot Cermet Variable Resistor $4.24 |
|
|
2 x 50 ohm Top Adjustment Trimmer Pot Variable Resistor $3.30 |
|
|
Variable Resistor Pot Tektronix p/n 311-2001-00 / 73M4G040L252T 2.5 Kilohms $9.95 |
|
|
50x 3362 P Variable Resistor Potentiometer Trimmer Pot 504 500K ohm $11.23 |
|
|
25pcs 3006P 2K ohm Trimmer Pot Potentiometers Variable Resistor $8.83 |
|
|
3386P 2K Ohm Variable Resistor Trimmer Pot Potentiometer 50 Pcs $12.37 |
|
|
5 x 2M ohm 500V 1/2W DIP Trimmer Pot Variable Resistors $3.20 |
|
|
105 1M Ohm Variable Resistors Trim Pot Potentiometers x100pcs $11.91 |
|
|
Variable Resistor 470K Ohm 2W Rotary Wirewound Pots Potentiometer w Knob $4.44 |
|
|
100x 2.2K Ohm 222 Variable Resistors Trim Pot Potentiometers $12.23 |
|
|
50x 3386P 502 5K Ohm Variable Resistor Trim Pot Cermet Potentiometer $11.66 |
|
|
100x 202 2K OHM Variable Resistor Trimmer Pot Potentiometer $11.84 |
|
|
10 Pcs 100 Ohms 3296 Trimmer Potentiometer Variable Pot Resistors $2.82 |
|
|
10 Pcs 200 Ohms 3296 Trimmer Potentiometer Variable Pot Resistors $2.88 |
|
|
10 Pcs 50K Ohms 3296 Trimmer Potentiometer Variable Pot Resistors $2.26 |
|
|
10 Pcs 1K Ohms 3296 Trimmer Potentiometer Variable Pot Resistors $2.80 |
|
|
10 Pcs 500 Ohms 3296 Trimmer Potentiometer Variable Pot Resistors $2.60 |
|
|
10 Pcs 100K Ohms 3296 Trimmer Potentiometer Variable Pot Resistors $2.22 |
|
|
10 Pcs 200K Ohms 3296 Trimmer Potentiometer Variable Pot Resistors $0.06 |
|
|
10 Pcs 500K Ohms 3296 Trimmer Potentiometer Variable Pot Resistors $0.25 |
|
|
100x 504 500K OHM Variable Resistor Trimmer Pot Potentiometer $11.39 |
|
|
100x 473 47K Ohm Variable Resistor Trim Pot Potentiometer $12.07 |
|
|
Variable Resistor Trim Pot Potentiometer 222 2.2K Ohm 100 Pcs $11.38 |
|
|
100x 50K Ohm 503 Variable Resistors Trim Pot Potentiometers $11.89 |
|
|
100x 4.7K Ohm 472 Variable Resistor Trim Pot Potentiometer $11.91 |
|
|
100x 220 Ohm 221 Variable Resistor Trim Pot Potentiometer $11.35 |
|
|
680K Ohm 2W Variable Resistors Wirewound Pots Potentiometer w Knob $4.99 |
|
|
50x 3362P 100K Ohm Single Turn Trim Pot Potentiometer Variable Resistor $12.15 |
|
|
5 x 200ohm 500V 5% 1/2W Trimming Pot Variable Resistors $3.19 |
|
|
50 Pcs 3296W 1M ohm Multiturn Potentiometer Pot Variable Resistor $12.03 |
|
|
50x 3386P 104 100K Ohm Variable Resistor Trim Pot Potentiometer $11.63 |
|
|
3386P 2K Ohm Variable Resistor Trimmer Pot Potentiometer 50 Pcs $12.08 |
|
|
50pcs 3296W 50K ohm Multiturn Potentiometer Pot Variable Resistor $12.31 |
|
|
50pcs 3362P Trimmer Pot Potentiometers Variable Resistor 500 ohm $11.69 |
|
|
2 x 50 ohm Top Adjustment Trimmer Pot Variable Resistor $3.32 |
|
|
50pcs 102 1K ohm Variable Resistor Trim Pot Potentiometer 3386P $12.48 |
|
|
3386P 500 Ohm Cermet Trim Pot Potentiometer Variable Resistor 50 Pcs $11.76 |
|
|
100x 200K Ohm 204 Variable Trimmer Potentiometer DIP Pot Resistor $11.95 |
|
|
10pcs 200K ohm Trimmer Trim Pot Variable Resistor 3296 $5.99 |
|
|
5 x 100 ohm 500V 1/2W Trimmer Pot Variable Resistors $3.23 |