A touch control switch suitable for fluorescent lighting, or reactive load, as well as incandescent lighting, or resistive load, installations without modification to the control circuit. The control circuit is connected between the lamp load, either resistive or reactive, and the supply circuit in the lighting installation for alternating current and comprises a semiconductor switching element, such as a TRIAC, having a gate electrode. A counting circuit with a forward stepping input and a digital control output is connected to the gate electrode of the TRIAC via a trigger pulse generating circuit for controlling the conduction of the TRIAC in accordance with the condition of activation of the digital control output. A control pulse shaping circuit has its output connected to the forward stepping input of the counting circuit and first and second input terminals connectable to a touch sensitive impedance, such as a manually controllable capacitive reactance, to enable turn on or activation of the lamp load. The aforementioned trigger pulse generating circuit comprises an edge-triggered mono-pulse generating circuit that has a first input for leading edge triggering and a second input for trailing edge triggering jointly connected to the supply circuit.

While the debate over an electric toothbrush vs manual really just comes down to personal preference, a few unbiased studies suggest the electric kind might help clean your teeth better. Namely, electric toothbrushes may be better at reducing plaque and preventing gingivitis, and possibly at reducing gum bleeding and inflammation. Electric toothbrushes have the added benefit of a built-in timer that encourages you to brush for a full two minutes. They also make it easier for people with limited dexterity to brush."I would say that nearly 100% of people not already using one would benefit from an electric brush," Courtney Hain, DDS, dentist and owner of Smile San Francisco told Insider.Keep in mind there are some people an electric toothbrush may not be right for (like if you have gum recessionissues) and there are a lot of factors to consider when dropping money on the expensive gadget. But if youre ready to switch over, here are the best electric toothbrushes, backed by the board-certified dentists we spoke with. Learn more about how Insider Reviews tests and researches beauty products.

Not to be confused with clock radio, an alarm clock incorporating a broadcast radio receiver.A modern LF radio-controlled clockA radio clock or radio-controlled clock (RCC), and often (incorrectly) referred to as an atomic clock is a type of quartz clock or watch that is automatically synchronized to a time code transmitted by a radio transmitter connected to a time standard such as an atomic clock. Such a clock may be synchronized to the time sent by a single transmitter, such as many national or regional time transmitters, or may use the multiple transmitters used by satellite navigation systems such as Global Positioning System. Such systems may be used to automatically set clocks or for any purpose where accurate time is needed. RC clocks may include any feature available for a clock, such as alarm function, display of ambient temperature and humidity, broadcast radio reception, etc.One common style of radio-controlled clock uses time signals transmitted by dedicated terrestrial longwave radio transmitters, which emit a time code that can be demodulated and displayed by the radio controlled clock. The radio controlled clock will contain an accurate time base oscillator to maintain timekeeping if the radio signal is momentarily unavailable. Other radio controlled clocks use the time signals transmitted by dedicated transmitters in the shortwave bands. Systems using dedicated time signal stations can achieve accuracy of a few tens of milliseconds.GPS satellite receivers also internally generate accurate time information from the satellite signals. Dedicated GPS timing receivers are accurate to better than 1 microsecond; however, general-purpose or consumer grade GPS may have an offset of up to one second between the internally calculated time, which is much more accurate than 1 second, and the time displayed on the screen.Other broadcast services may include timekeeping information of varying accuracy within their signals.