Recent content by Baluncore

If you think of the transducers as voltage sources, then you would connect the transducers in series. Seen as current sources, you would connect transducers in parallel, but they are neither, and they are both. They are impedance matched energy transducers, being connected by transmission lines...

I believe the transducer is a bidirectional or reciprocal device that can work as a transmitter or a receiver. It is connected to the electronics with a transmission line. Voltage implies current, which implies power, which is the rate of energy transfer. If the transmission line has a...

No, you will not. The array pattern may be the same, but the magnitude of the main-lobe energy will be less. A transducer is impedance matched to its preamplifier, to maximise power transfer and prevent retransmission. If you wire three transducers in parallel, you will not be matching their...

I expect the use of Edison screw, ES, or E27 light fittings would twist and damage the power cord. Maybe bayonet cap lamps, BC, or B22, did less damage to the cords, and so extended the time before general purpose outlets became available.

You can use a diode bridge to rectify the current so both the positive and the negative currents flow into the battery in the same direction. https://en.wikipedia.org/wiki/Diode_bridge You might consider a voltage doubling circuit, but winding more turns, moving the magnet faster or using a...

I purchased two tickets with different unknown numbers in the lottery. I placed them in a Schrödinger’s box, then walked away, ignoring the draw. According to Bayes' analysis, I am probably a winner, and will never need to buy another ticket in a lottery. Others make the mistake of checking the...

You might try glueing two magnets together, NS+SN, to make a longer magnet, then drop them together through the one coil. Alternatively, wind two coils in series on the same former. Wind one forwards and the other backwards. Space the coils apart by the length of the magnet.

Here is Amira Willighagen, aged about 10, who had no singing teacher, and did not read music, but who, I believe, learnt to sing by mimicking the sound of Maria Callas from YouTube recordings. For someone so young, to sound so mature, is a stunning anachronism.

What is your question precisely ?

If the magnet is a bar with N-pole at one end and S-pole at the other, then to test the generator, turn the magnet, end for end, outside the coil, while watching the coil voltage.

Yes. When you slide the magnet through the core, the field does not reverse, so you get no voltage induced.

SUPER TYPHOON: Ragasa ( Nando ) - Peak winds: Sustained 270 km/h ( 145 knots/ 168 mph ) - Peak Gusts: 325 km/h (175 knots / 201 mph ) - Max Wave Height: 14 metres ( 46 feet ) - Tracking Speed/Direction: 280 degs (West) at 22km/h ( 12 knots ) Edit...

What pole orientation does the magnet have? How is the wire wound on the core? What type of galvanometer, with what current range? The flux through the core must change when the magnet is moved. Have you considered measuring voltage, since V is proportional to the rate of change of flux.

That response is like a symmetrical over-centre latch. Are the units mg, g, kg, tonne or N ?

Open Office Writer got left behind when the project forked in 2010 to create LibreOffice, which is very widely used, on MS Windows, and bundled with current Linux systems. Estimated around 200 million active users. When you come to a fork in the road, take it. - Yogi Berra...