Task № 3. Graphic calculation mode zener

Determine the range of possible load current I_n changes in certain input voltages. Choose from the standard range Rb.

№ var.
Type zener	КС133А	КС139А	КС147А	КС156А	КС162А	КС168А	КС170А	КС175А	Д808	Д818Б
, В		5.5		6.5			8.5			10.5
, B					11.5					13.5
№ var.
Type zener	КС133А	КС139А	КС147А	КС156А	КС162А	КС168А	КС170А	КС175А	Д808	Д818Б
, В	9.5		10.5				14.5
, B

Figure 3. Scheme of inclusion of the zener diode

Task № 4. Calculation of power losses components in the power switches

To calculate the components of power losses in the power switches. Find the key efficiency and safe operating area.

№ var.	, В	, В	, Om	, кГц
				0.25	0.8
				0.95	0.4
				0.05	0.6
				0.6	0.7
					0.2
					0.5
					0.3
				1.5	0.8
					0.4
					0.3
					0.6
					0.4
					0.7
					0.5
					0.2
					0.6
					0.8
					0.3
					0.2
					0.5

Figure 4.

Balabekova Madina Orazalievna

Task №5. Calculation of the amplifier stage

The common base (Figure 5), set the following parameters: ; ; ; ; ; ; ; .. Find amplifying circuit parameters.

Figure 5.

№ var.			, мкСм	, Ом	, Ом	Ом	, Ом	Ом
	0.97
	0.99					1.5
	0.98					1.2
	0.99
	0.96					1.5
	0.97					1.2
	0.99
	0.98					1.5
	0.96					1.2
	0.97
	0.98					1.2
	0.99					1.5
	0.97					1.2
	0.96					1.5
	0.99
	0.98					1.5
	0.96
	0.97					1.2
	0.99					1.5
	0.96