Permanent magnets are useful because they create the magnetic field without needing any electricity. The key to an electric motor is to make the electromagnets change polarity at the right position of the rotor. The diagram shows the electromagnet switching from north to south as a south pole in the rotor passes by.

As the energy in magnets lasts for many years, the wheel is able to rotate and keep on spinning without the need to ever stop, thus the motion of the spinning wheel creates power for many years. This is what makes a magnetic powered generator into a perpetual generator. Impossible?

Once a magnet is fully magnetised, it cannot be made any stronger as it is fully ‘saturated’. As more magnets are stacked together, the strength will increase until the length of the stack is equal to the diameter. After this point, any further magnets added will provide a negligible increase in performance.

There are few types of permanent magnet materials currently used for electric motors. Each type of metal has its advantages and disadvantages. Permanent magnets are hardly permanent and do have limited capabilities. Certain forces can be exerted onto these materials to demagnetize them.

Permanent magnet motors offer significant efficiency improvements over AC Induction Motors. A permanent magnet motor’s full load efficiency is higher than an AC induction motor.

Zacks’ proprietary data indicates that Alphabet Inc. is currently rated as a Zacks Rank 1 and we are expecting an above average return from the GOOGL shares relative to the market in the next few months. The financial health and growth prospects of GOOGL, demonstrate its potential to outperform the market.

Apple might not be cheap, but buying for the long-term at current levels is far from a bad idea. This company will deliver strong shareholder value for decades.

Taiwan Semiconductor Manufacturing Company (TSM) is a leading foundry in the semiconductor industry and is investing massively in its business, boding well for revenue and earnings growth over the long-term, and has a reasonable valuation being therefore attractive for long-term investors.

In the last year, 13 stock analysts published opinions about TSM-N. 10 analysts recommended to BUY the stock. 2 analysts recommended to SELL the stock. The latest stock analyst recommendation is BUY.

Taiwan Semiconductor Manufacturing Co Stock Is Estimated To Be Significantly Overvalued. The stock of Taiwan Semiconductor Manufacturing Co (NYSE:TSM, 30-year Financials) appears to be significantly overvalued, according to GuruFocus Value calculation.

The 4 Best Semiconductor Stocks to Buy for the Next Decade

1. Taiwan Semiconductor Manufacturing. In the past, many chipmakers manufactured their chips with their own fabrication plants, also known as fabs or foundries.
2. ASML Holding.
3. NVIDIA.
4. Qualcomm.

Onto Innovation has received a consensus rating of Buy. The company’s average rating score is 3.00, and is based on 4 buy ratings, no hold ratings, and no sell ratings.

The 4 best 5G stocks to watch in 2021

• Qualcomm (QCOM) Qualcomm is a technology company headquartered in San Diego, California.
• Ericsson (ERIC) Ericsson is a telecommunications equipment and services company headquartered in Stockholm, Sweden.
• Nokia (NOK)
• Verizon Communications (VZ)

At its current price of $552.47 per share and the market cap of $342.5 billion, NVIDIA stock appears to be significantly overvalued. GF Value for NVIDIA is shown in the chart below. Warning! GuruFocus has detected 7 Warning Signs with NVDA.