How does this circuit work ?
HI everyone ..
I have done this circuit , but I have to write some lines to describe it ..
can you help me please
* this is the circuit
I have done this circuit , but I have to write some lines to describe it ..
can you help me please
* this is the circuit
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Surely you can find out how it works from the site you downloaded it from ?
Steve
Steve
Dec 25, 2011. 1:19 PMlayal_1 (author)
says:
I acutely got it from this link
http://www.youtube.com/watch?v=zWPwtay0dxM
check it please :)
Thank you
http://www.youtube.com/watch?v=zWPwtay0dxM
check it please :)
Thank you
Pair of astable multivibrators. One runs at a lower fixed frequency, the other doesn't.
Dec 26, 2011. 7:11 PMlayal_1 (author)
says:
what is the Purpose and interest of these part (why do we have to use it in this circuit )?
- 555
- multivibrator
- polar capacitor
- non polar capacitor
my project will be tomorrow I need your help please
Read what I have written in my report . tell me if I'm wrong
Description:
• 555 used two times because we want to produce two different voice in the same time .
• Pair of astable multivibrators. One runs at a lower fixed frequency, the other doesn't.
• Variable resistor used to produce different frequency for each 555 and to control the voice .
• Resistor used to protect the capacitor from damage .
• Ceramic Capacitor (non polar capacitor) used in a circuit that has high frequency like police siren .
• Electric capacitor ( polar capacitor) used because it has a high capacitance to store the voltage and it has a small resistor .
Thank you so much :)
- 555
- multivibrator
- polar capacitor
- non polar capacitor
my project will be tomorrow I need your help please
Read what I have written in my report . tell me if I'm wrong
Description:
• 555 used two times because we want to produce two different voice in the same time .
• Pair of astable multivibrators. One runs at a lower fixed frequency, the other doesn't.
• Variable resistor used to produce different frequency for each 555 and to control the voice .
• Resistor used to protect the capacitor from damage .
• Ceramic Capacitor (non polar capacitor) used in a circuit that has high frequency like police siren .
• Electric capacitor ( polar capacitor) used because it has a high capacitance to store the voltage and it has a small resistor .
Thank you so much :)
The variable resistors do different jobs in each circuit - find a site that shows all the possible conenctions for a 555 - particularly, and here's a clue "VFO"
The polar caps here are largely used because its a cheap way to get lots of capacitance. Likewise, non-polar caps are avaliable in smaller sizes.
Steve
The polar caps here are largely used because its a cheap way to get lots of capacitance. Likewise, non-polar caps are avaliable in smaller sizes.
Steve
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