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are driven directly by the vertical plug-in. Aside from being dual-beam, the 565 is unusual among the | are driven directly by the vertical plug-in. Aside from being dual-beam, the 565 is unusual among the | ||
other 560-series models in the fact that it has built-in trigger, sweep and horizontal amplifier circuits. | other 560-series models in the fact that it has built-in trigger, sweep and horizontal amplifier circuits. | ||
It is also unusual in that it employs a tunnel diode in the trace intensification circuit. The tunnel diode | It is also unusual in that it employs a [[tunnel diodes|tunnel diode]] in the trace intensification circuit. The tunnel diode | ||
forms as a bistable multivibrator: kick it one way and it turns on and stays on, kick it the other way and | forms as a bistable multivibrator: kick it one way and it turns on and stays on, kick it the other way and | ||
it turns off and stays off. | it turns off and stays off. |