MC33161 查看數據表（PDF） - ON Semiconductor

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产品描述 (功能)

生产厂家

MC33161

Universal Voltage Monitors

ON Semiconductor 

MC34161, MC33161, NCV33161

Input

92 Vac to

276 Vac

T

3.0A

MR506

1N

4742

10k

3W

8

2.54V

1

Reference

10k

100k

7

+

2+ −

1.27V

1.6M

+

47

+

3+ −

+

10

1.27V

−

++

2.8V

−

++

0.6V

4

+

MAC

228A6FP

220

250V

B+

75k

10k

+ 220

250V

1.2k

75k

RTN

6

5

The above circuit shows the MC34161 configured as an automatic line voltage selector. The IC controls the triac, enabling the circuit to function

as a fullwave voltage doubler or a fullwave bridge. Channel 1 senses the negative half cycles of the AC line voltage. If the line voltage is less

than150 V, the circuit will switch from bridge mode to voltage doubling mode after a preset time delay. The delay is controlled by the 100 kW resistor

and the 10 mF capacitor. If the line voltage is greater than 150 V, the circuit will immediately return to fullwave bridge mode.

Figure 26. Automatic AC Line Voltage Selector

http://onsemi.com

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