Output transformerless
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Output transformerless is a type of vacuum tube audio power amplifier, which omits an output transformer for the purpose of greater linearity and fidelity. Conventional vacuum tube amplifier designs r
OTL tube amplifier Model H3 as designed by Julius Futterman in 1965 (long-term exposure)
Capacitive coupling
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Capacitive coupling is the transfer of energy within an electrical network or between distant networks by means of displacement current between circuit nodes, induced by the electric field. This coupl
Output transformerless
…couple the amplifier's output stage to the loudspeaker. Instead, OTLs use one of two primary methods for output stage coupling: direct coupling (DC) or capacitive coupling (AC). There is some contention with respect to applying the broader term "OTL" to capacitively coupled designs and variants. The need to delineate these…
Capacitive coupling from high-voltage power lines can light a lamp continuously at low intensity.
Polyester film capacitors, commonly used for coupling between two circuits.