[capacitors/resistors in parallel]

is there a similar formula for discharging a capacitor through (or across) a parallel capacitor?

I meant to say thru a parallel resistor not capacitor. sorry bout that!

[capacitors/resistors in parallel]

hi

I have this formula for discharging a capacitor thru a series resistor:

V=[V0]e^(-t/RC)

is there a similar formula for discharging a capacitor through (or across) a parallel capacitor? (i.e. where the voltage across the capacitor after a time t is modelled by the capacitance, resistance and initial voltage)

thanks, monoman

[radio]

thank you walid! no doubt i will get back to you

[radio]

hi,

I have been trying to learn all about how radio works, and ive looked at quite a few resources about it. I know that you need to create a carrier wave and then put the data onto it with a modulation signal, and that the carrier wave is produced at the transmitter by putting an alternating voltage across it. there is a couple of points:

> how can you put an alternating voltage along a single piece of wire(transmitter) which is only connected to the circuit at a single point? doesn't there need to be an electrical potential at both ends?

> does a reciever need to be providied with an oscillating electrical signal too, or does a radio wave simply hit a transmitter producing the modulated signal through the wire?

>also a couple of circuit diagrams would really help (I am particularly interested in Frequency modulation radio)

Thank you very much,
Monoman :)

[RC sites?]

thanks! loadz of info! ;)

[RC sites?]

hi, I have a grasp of some basic electronics (analogue and digital) and am trying to get started learning about RC circuits as its something ive never bothered to look at before. i would really appreciate some good links on this topic where i can learn about basic RC circuits and everything involved with them.

thanks for any help,

monoman

[monostable-astable]

hi i am fairly new to electronics and this is the first time i have used this site, hopefully i can use it to clear up some questions i have about various electronics problems.

i have some basic components and have managed to build a circuit using the 555 chip that converts direct current to alternating current. Do i refer to this circuit as a 'monostable multivibrator' , or an 'astable multivibrator', and what exactly is the difference between the two?

any help appreciated,
monoman ;)