Flip clock fans11/14/2023 The 1930 uses a precision Temperature Compensated Crystal Oscillator (TCXO) to assure the clock keeps absolutely perfect time, and a pure sine waveform to assure that it is quiet on your night stand. The Model 1930-115V (Chronos) Frequency Converter is triple-protected against faults, making it safe in the home. Specifically the Model 1930-115V (Chronos) Frequency Converter will take 220 to 240 volts at 50 hertz and output a very stable 115 volt alternating current at 60 hertz with a pure sine wave. Of great interest to the flip clock fan however, are his Frequency-Precise Power Inverters. Ken has spent over two decades working with vintage electric and historical self-winding clocks and maintains an excellent website offering information and products for these type of clocks. That's where Kens Clock Clinic comes to the rescue. And noise isn't something you want on your night stand. Thus the output will be less than a perfect sine wave, will not be a perfect 60 cycles per second, which will cause the clock to keep very poor time and be noisy as well. Many electronic devices will not run smoothly and quietly with this waveform and, since the manufacturer was focused only on cost, they don't have the frequency accuracy needed, either. The output from these budget devices only approximates a sine wave and it's not very smooth. In a cheaper device, the frequency is changed to 60 hertz, but the wave output is often a modified sine wave, which looks like a chopped up rectangular wave, not the smooth sine wave that the clock was designed to accept. Getting an electronic device to output a smooth sine wave at 60 hertz is complicated, requiring special circuitry. So why not just get a cheap one? There are some budget shaver transformers meant to do this for example. So now we know we must get a device that changes both voltage and frequency. If you run such a clock with 50 hertz you'll lose 12 minutes every hour. The flip clock is geared specifically to the motor, and the motor of clocks intended for use in North America requires a frequency of 60 hertz to result in the flipping of the clock tiles properly. A synchronous motor has a speed exactly proportional to the frequency. Vintage flip clocks are run by synchronous motors. On a device that displays or graphs this change over time, an oscilloscope, the output is a smooth sine wave. When alternating current changes direction it does so in a particular pattern. ![]() 60 hertz simply means 60 cycles per second. The rate of direction or polarity change is called the frequency. That means the current changes direction, or polarity, rapidly. Household current is alternating current. The voltage first has to be stepped down from the higher voltage to around 110 to 120 volts. Yes, you'll be able to plug it in, then immediately, you'll smell the clock's internal transformer burning up. Just getting an adapter does nothing to make a US clock work with a different electrical system. The first possible mistake a new flip clock owner can make is to simply get a plug adapter. That's why presents this instructional article on flip clock voltage and frequency and gives you our recommendation for the best company to supply your electrical transformation needs. Not only do most transformers or converters not even change the frequency of the current, the ones that do, often do not do it properly. Unfortunately, this is always a bad idea. I love my little Seth Thomas and think it's a riot that you have to jam your finger up inside the clock to adjust the wheels.The mistake many newcomers to flip clocks make, is that they intend to get a "cheap" electric transformer to power their clocks. They're not that expensive, but often have noisly little motors. ![]() Lawson Clyclometer Clocks have a significant following - and are both beautiful, and quite expensive! Typically on eBay these days you'll mostly see Seth Thomas Speed Reads. During this interim period reigned the "rotating drum" or "wheel clock", known as the cyclometer clocks! These clocks were huge in the 1930s and 1940s, but were produced right up until the take over by the "modern" flip clocks. While the Plato clock must be considered the grandfather of flip clocks, there was a significant period of time between when this clock with flipping pages (tiles, or "plates") came to being in the early 1900s,and the introduction of the modern flip clock ( The Classic Solari Cifra 3). ![]() ![]() Between the famous flipping plate clock - the Plato Clock - and our beloved flip clocks, were - The Cyclometers!
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