ITT - Index of

TAA775G
POWER OSCILLATOR
For the circuit in Fig. 8 these equations are
valid:
T = 1/fo
R in kfl
C in MF
RXC sec
800
ton = 0.45 T
torr = 0.55 T
5 r--­ ----,
..----41---0--1 I
TAA775G
I
I
I
+12V
Fig. 8: TAA775G as pulse generator with adjustable
frequency and constant on/off ratio.
Charging and discharging of the time-determining
capacitor through the same resistor.
5 . ____ ~
..--...-----.....-o--l
----I
I
1
1
1
TAA775G
: 10
• 1
7 1 1
Raand Re >'1 kOeacho--tL. I.
~ I ---l.----
:1..3and8
+12V
Fig. 9: TAA775G as pulse generator with adjustable
frequency and constant on/off ratio.
Charging and discharging of the time-determining
capacitor is effected through separate
resistors.
For the circuit in Fig. 9 these equations are
valid:
ton = 0.7XCXR. msec
torr = CXRa msec
R in kn
C in MF
TAA775G
---.,
I
I
1
1
1
~~~~6~ i
7 1 1
RI > I k.n~L_--A---J
- .r..3ande
1
+12V
Fig. 10: TAA775G as pulse generator with
adjustable on-time
For the circuit in Fig. 10 these equations are
valid:
ton = 0.6XCX(R1 + R,) msec
tOff = CXR1 msec
TAA775G
R in kfl
C in MF
+12V
Fig. 11: TAA775G as pulse generator with
adjustable off-time
For the circuit in Fig. 11 these equations are
valid:
ton = 0.7XCXRl msec
torr = 0.75XCX(R1 + R,) msec
R in kfl
C in MF
8-103