BY278 查看數據表（PDF） - Philips Electronics

零件编号

产品描述 (功能)

生产厂家

BY278

Damper diode

Philips Electronics 

Philips Semiconductors

Damper diode

Product specification

BY278

APPLICATION INFORMATION

For horizontal deflection circuits, two basic applications are shown in Figs 8 and 9.

The maximum allowable total power dissipation for the diode can be calculated from the thermal resistance Rth j-a and

the difference between Tj max and Tamb max in the application. The maximum IFWM can then be taken from Fig.2.

The basic application waveforms in Fig.10 relate to the circuit in Fig.8. In the circuit in Fig.9 the forward conduction time

of the diode is shorter, allowing a higher IFWM (see Fig.2).

handbook, hhaolrfpizaognetal

deflection

transistor

D1

LY

MBE935

+ (E-W)

D1 = BY278.

Fig.8 Application in basic high-voltage E/W

modulator circuit.

handbook, hhaolfrpizaogental

deflection

transistor

MBE934

D1

Cf

LY

Cs

D1 = BY278.

Fig.9 Application in basic horizontal deflection

circuit.

handbook, full pagewidth

IF

VR

I FRM

I FWM

time

VRRM

1996 Sep 26

tp

T

time

MCD430 - 1

Fig.10 Basic application waveforms.

6

Share Link: