| This circuit is designed to give an audible and visible warning to the absent-minded motorist who forgets to switch off...
| This circuit is designed to give an audible and visible warning to the absent-minded motorist who forgets to switch off...
| This circuit is designed to give an audible and visible warning to the absent-minded motorist who forgets to switch off...
| his circuit can be used as a tuning indicator, instead of the more common pointer instru- ment. It gives a three-LED indication...
| his circuit can be used as a tuning indicator, instead of the more common pointer instru- ment. It gives a three-LED indication...
| A disadvantage of the VU meters frequently used in hi-fi equipment is their inability to respond to short transients, which can...
| A disadvantage of the VU meters frequently used in hi-fi equipment is their inability to respond to short transients, which can...
| Most amateur constructors will have one or two burnt out power transistors lying about in their junk box. If at least one of...
| Most amateur constructors will have one or two burnt out power transistors lying about in their junk box. If at least one of...
| Many circuits using, for example, both op- amps and logic circuits, require more than one · supply voltage. The circuit des...
| The standard method of measuring the har- monic distortion of an amplifier is to feed the amplifier with a pure sinew ave signal...