Can a square wave generated using an astable NE555 be used as input of a transformer instead of AC? Say, I generate a square wave of 60Hz using NE555 and a 24V at 6A supply and feed it into a transformer with 50:1 turns ratio, will I get 0.48V at 300A out?
Electronic – Square Wave input into Transformer
555high-currenttransformerwaveform
Related Solutions
You should feed the antenna with a sine wave to transmit a pure single-frequency signal. A square wave as generated by the 555 will have many harmonics.
Morse code can be transmitted on any frequency. 500 KHz was, long ago, the marine morse code distress and calling channel.
If you look at the 555 internal diagram you can see that the output you use is not symmetrical: the top side is a darlington, so it has (at least) two Vbe drops. The low side is a common emitter, so it can be saturated.
In short: the output low will be closer to ground than the output high will be to Vcc.
One way to compensate would be a low-valued resistor between the output and Vcc.
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Best Answer
You'll need to couple the square wave with a capacitor to the transformer because standing DC voltages will just cause heat but there is no problem feeding a transformer with a square wave in principle.
In practice, if you fed a 60Hz "power" square wave to a transformer, the higher order harmonics in the square wave would mean that a regular AC power transformer wouldn't be as efficient as being fed with a sine wave.
A 24V 6 A supply is capable of providing a power of 144 watts and your output requirement is also 144 watts so you need to be aware that you might only get 90% efficiency and expecting 144 watts from the transformer output is a little naive.