Isolation transformer
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An isolation transformer is a transformer used to transfer electrical power from a source of alternating current power to some equipment or device while isolating the powered device from the power sou
A 230 V isolation transformer
A simple 1:1 isolation transformer with an extra dielectric barrier and an electrostatic shield between primary and secondary. The grounded shield prevents capacitive coupling between primary and secondary windings.
Halo TG110-S050N2RL 10/100BASE-TX Ethernet pulse transformer in SO-16 package
All American Five
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The term All American Five is a colloquial name for mass-produced, superheterodyne radio receivers that used five vacuum tubes in their design. These radio sets were designed to receive amplitude modu
The Philco PT-44 is an example of the All American Five radio set. This set deviates from the more usual AA5 in that it features an Octode mixer, though it still operates on the pentagrid principle.
Placard showing the tube placement. This set would have required an additional series resistor in the heater chain as the tube heater voltages do not sum to 115 volts.
Back view of the chassis. The compact design is aided by putting both IF transformers in a single can.
Five tube AM radio demonstrator of the single ended tube variant described below. Note "Do not ground" safety warning.