Page 87 - Сигурност и отбрана - брой 2 - 2024

Security & Defense, Issue 2, 2024 Scientific journal

Figure 5. Series connection scheme of pulse and LDO-type voltage
stabilizers

The scheme of the LDO stabilizer with the regulating metal-oksid-
yarımkeçirici field transistor is given in Figure 6.

Figure 6. Schematic of an LDO-type stabilizer with a regulating or metal-
oxide-semiconductor transistor

Figure 7 shows the diagram of the LT3045 compensating stabilizer of
the Analog Devices company as an example of an LDO stabilizer made in a
bipolar transistor. In this circuit, a voltage drop occurs between the collector
and the emitter of the transistor. This voltage is rarely greater than 0.2 Volts.
In stabilizers of the 7805 type, the voltage drop in the two emitter junctions
and the output stage of the differential amplifier is determined, which is
approximately 2 Volts. Note that in this scheme, the reference voltage source
describes the resistance supplied with a current of 100 μA from the output of
the current stabilizer. This allows to get rid of the noise generated during the
piercing of the p-n junction of the stabilitron. In addition, such a solution

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