NE555D Просмотр технического описания (PDF) - Tiger Electronic

Номер в каталоге

Компоненты Описание

производитель

NE555D

Single Timer

Tiger Electronic 

NE555N/NE555D

5、 Pulse Position Modulation

If the modulating signal is applied to the control terminal while the timer is connected

for the astable operation as in Figure 11, the timer becomes a pulse position modulator.

In the pulse position modulator, the reference of the timer's internal comparators is

modulated which in turn modulates the timer output according to the modulation signal

applied to the control terminal.

Figure 12 illustrates a sine wave for modulation signal and the resulting output pulse

position modulation : however, any wave shape could be used.

6、 Linear Ramp

When the pull-up resistor RA in the monostable circuit shown in Figure 1 is replaced

with constant current source, the VC1 increases linearly, generating a linear ramp. Figure 13

9/11

Share Link: