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453: Difference between revisions
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There are two trigger/sweep units in a 453, thereby enabling delayed sweep mode. | There are two trigger/sweep units in a 453, thereby enabling delayed sweep mode. | ||
There are two delayed sweep modes: "B runs after A" and "B triggerable after A". | There are two delayed sweep modes: "B runs after A" and "B triggerable after A". | ||
A and B sweep triggering | The A and the B sweep triggering both use [[tunnel diodes]], | ||
the actual trigger circuit. The use of | with a trigger preamplifier preceding the actual trigger circuit. | ||
useful to twice the | The use of tunnel (Esaki) diodes gave the 453 triggering that is stable and | ||
useful to twice the oscilloscope's bandwidth. | |||
The vertical amplifier that drives the CRT ([[T4533]]) deflection plates is a cascoded differential amplifier made of NPN transistors. | The vertical amplifier that drives the CRT ([[T4533]]) deflection plates | ||
is a cascoded differential amplifier made of NPN transistors. | |||
Each horizontal deflection plate is driven by a common-emitter amplifier with feedback. | Each horizontal deflection plate is driven by a common-emitter amplifier with feedback. | ||