Model 545A Schematic (00545-60001) - HP 545A Operating And Service Manual

Model 545A
TIP VOLTAGE
NOT CONNECTED
TO OTHER CIRCUIT
TTL= I.SV
CMOS=2.5V
PROBE
TIP
NOTE
I. IF A lUI IS MARKED "1820-1620T", AIR2 =
20K. IF AIUI MARKING IS "1820-1610",
AIR2 = 24K.
Page 25
AI LOGIC
ftO~RD ASSEMB_L'f(00545-60~0Jl..S~RI;sc...:.I,.62,_B _ _ _
51 CMOS-.6
Ul
2 3
2.5V
tt!' - ,
CR2
C2
2.2U
Q3
I
I
+
C3
__ j
IOU
Figure 11. Mode/545A Schematic Diagram Series 1628