The drive current for the two darlingtons and the

waveform time constants are all defined in turn by a

resistor between pin 9 and ground.

tained with a 1.2K

Ω resistor. The darlington drive

currents are given by :

set by a capacitor connected between pin 6 and

ground. This capacitor, C1 is related to the duration,

= 12

(typ.)

from :

⋅

=12

(typ)

Figure 4 : Waveforms of the Typical Application Circuit of Fig. 2.

L584

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