6.8 Practical Examples of Implementation …
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a
b
c
Fig. 6.104 Circuits of the discharge element Z 0 of the output transistor capacitance base: transistor
(a), diode (b) and diode-transistor (c)
Fig. 6.105 Circuits of the active output AC with accelerating feedback: diode (a), transistor (b)
At the same time, the transistor VT2 opens, and the voltage reduction at its
collector leads to discharge of the parasite capacitance between the base and the
emitter of the transistor VT4 and its closing. This is the difference from the known
mode, in which the process of activation of the transistor VT2 started only after
activation of the transistor VT1, which increased the time of locking of the transistor VT4. In the solution used by the authors, these processes were parallel in time,
which ensured faster locking of the transistor VT4 relative to the time of unlocking
of the transistor VT1 and excluded the state in which transistors VT4 and VT5 are
simultaneously open, thus ensuring increased noise immunity of the device.
All of the above technical solutions were used in logical series of microcircuits
that were withdrawn from production over 10 years ago.