What is need of dc to dc converter?

you have to purchase new wi fi repeater

Hiiiiiiiiiiiiiii friend you have to contact through any book of electronics project

go and check on diptrace pcb design software.

Ya, we can operate electrical appliances through the remote i.e solid state remote control. U can purchase from market or design it yourself. I designed it but not work properly....

Transmission means transport of signal or power through wire and during the transportation of power some factor are affecting i.e temperature,capacitance, inductance etc. These factor are attenuate the signal and...

what is difference between normal capacitor and coupling capacitor and can we use normal capacitor instead of coupling capacitor?