A NOR gate can have two or more inputs. The o on the output means not showing that it is a Not OR gate. The output of a NOR gate is true when none of its inputs are true.
A capacitor stores electric charge. Polarised capacitors must be connected the correct way round. They usually have larger values, 1µF and greater. See above for uses.
Microphone A transducer which converts sound to electrical energy.
A capacitor stores electric charge. It can be used with a resistor in a timing circuit, for smoothing a supply (it provides a reservoir of charge) and can be used as a filter (blocking DC signals but passing AC signals). Unpolarised capacitors usually have small values, less than 1µF.
Home electrical wiring fuse box power meter. Domestic fuse box circuit breaker stock photo royalty. Consumer units fuse box upgrades a j howarth electrics. Electric meter and fuse board in domestic house stock. Domestic fuse box stock image c science photo. Domestic fuse box stock photos. Domestic fuse box stock photos. Ultimate guide to domestic consumer units. Fuse boards. Fuse box consumer unit board installation. Meter switch and fuse box for domestic solar panels news. Domestic fuses stock photos images. Domestic fuse box wiring diagram images. Domestic fuse box stock photos. Old breaker box fuses fuse parts wiring diagram. Rcd protection types aa electrical services. Fuse box house stock photos images. Old fuses fuse box stock photos. Domestic fuse box stock photo alamy. Domestic home electrics main fuse box with switch being.