Amber House

The Science Museum at Wroughton has very recently acquired a beautiful exhibit from a British 16kHz Transmission Station that was set up in 1926 and decommissioned in 2003. The object shown is the tuning inductor. The combination of very low frequency and high power levels makes everything big. There is no less art in this than engineering.

https://www.youtube.com/watch?v=L3Ux9dKgRi8

The Making of Information Age: Rugby Aerial Tuning Inductor Rugby Radio Station began sending messages around the world in 1926. These enormous coils were part of the station's original transmitter (GBR), and can be s...

640Volt inverter. Busbar, IGBTs, snubbing capacitors, smoothing capacitors and balancing resistors can all be seen here. This is by far the most powerful inverter we have built to date. Testing to follow soon..

The V-electrodes have been installed at the top of the sphere.

Good morning. Here's a capacitor bank we designed and assembled for an induction heater carrying currents of around 400A at frequencies slightly below 100kHz. The geometry is designed to optimize current sharing.

In general, a capacitor present a few millimeters closer to a load than his counterparts would tend to carry higher currents than the ones 'lagging' behind. That capacitor -in absence of optimization- would be the first to fail; consequently setting off a domino sequence as the remaining capacitors are burdened harder and harder with every additional failure.

Pencils are mostly graphite and have resistances -from tip to bottom- of around a few ohms. Resistance actually varies with pencil grade (H, HB, B ,2B, etc..) with darker grades having lower resistance. We've done some adjustments on our HV circuit and have used pencils for electrodes today.

The pencil has literally become mightier than a sword. (Or of comparable might if anyone reading this is in a pedantic mood)