Magee, Harold Oscilloscope trigger circuits / by Harold Magee - 1a ed. - Beaverton (Oregon) : Tektronix, 1969. - 87 p. : figs., gráfs. ; 22 cm - Circuit concepts . Subjects--Topical Terms: ELECTROTECNIAOSCILOSCOPIOSCIRCUITOS ELECTRICOS Universal Decimal Class. No.: 621.373