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Hard to know what you are meaning?
A timer is a device in a circuit that switches on then off at given times. There may be many on/off operations not just the one.
Think of some lights, say street lights that come on at a certain time then off at a later time. If they are electric that would fit you question.
Although the lights are more likely controlled by darkness at dusk and first light in a morning.
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What would happened if you wired a 240v ballast and a 120 v ballast into a heavy duty timer?
The timer has to be multi-pole. The ballast must be connected to the load contacts of the timer. If the timer is a 120 Volt timer, the timer has to run on a 120V. circuit. Loads are loads, and as long as you have a multi-load timer you can hook up whatever you want. If the timer only works on a shared power source (load shares the timer supply) you will need to use a contactor on the load side or the timer.
What is the Electrical supply IN THE UK?
Home electrical service in the UK is 230 volts at 50 hertz.
What are the three factors that effect the electrical parameters of a op-amp?
Supply voltage , temperature , frequency are factors that effect the electrical parameters of opamp
Who do you contact to have mains electric cable laid to your property?
The electrical supply authority for your area
What point in an electrical circuit that is connected to the negative side of a power supply is called what?
battery
