(1). WORKING VOLTAGE: The working voltage of capacitor should be 10 to 20 percent higher than the circuit voltage.
(2). CAPACITANCE: The capacitance of the capacitor selected should be exactly or nearly equal to the required value.
(3).TYPE OF DIELECTRIC: The selection of the dielectric used in the capacitor depends on the dielectric used in the capacitor depends on the circuit frequency:
(a) For filter circuit (50 Hz) – paper and electrolytic capacitors.
(b)A.F. circuits (up to 20 KHz) – paper, mica and ceramic capacitors.
(c) R.F. circuits (above 20 KHz) –mica, ceramic, air and vacuum dielectric capacitors.
(3)CIRCUITS REQUIREMENT: A fixed, variable or adjustable capacitor is selected depending on the circuit requirements.
(4)PRICE: Normally, the order of price of a capacitor lies in the following descending order – Electrolytic, ceramic, mica, paper etc. Hence, the selection of a capacitor depends on its price also.
(2). CAPACITANCE: The capacitance of the capacitor selected should be exactly or nearly equal to the required value.
(3).TYPE OF DIELECTRIC: The selection of the dielectric used in the capacitor depends on the dielectric used in the capacitor depends on the circuit frequency:
(a) For filter circuit (50 Hz) – paper and electrolytic capacitors.
(b)A.F. circuits (up to 20 KHz) – paper, mica and ceramic capacitors.
(c) R.F. circuits (above 20 KHz) –mica, ceramic, air and vacuum dielectric capacitors.
(3)CIRCUITS REQUIREMENT: A fixed, variable or adjustable capacitor is selected depending on the circuit requirements.
(4)PRICE: Normally, the order of price of a capacitor lies in the following descending order – Electrolytic, ceramic, mica, paper etc. Hence, the selection of a capacitor depends on its price also.
No comments:
Post a Comment