Pin Details of IC TDA1670(A),TDA1670(V), TDA 1675

Substitute : TDA1675, TDA 167OV, TDA1870

Function : Vertical oscillator and vertical output ,Blanking generator

Pin No. Functions Voltage
1. It is one output of the power amplifier.It drive the yoke
by a negative ramp current (50Hz.)
2. Supply voltage for power output stage 21.4
3. Vertical oscillator (50Hz) 3.4
4. Vertical oscillator (50Hz) 0.5
5. Input for sync pulses (+Ve) (50Hz) 0.4
6. Output of the switch driver by the internal clock pulse
generated by the threshold circuits
7. The curret between Pin No.7 and ground decides the
height of the ramp (sawtooth pulse)
8. Ground (-Ve supply voltage ) 0
9. Input of the buffer (output) stage 3.9
10. Output of the buffer stage and is internal connected
to the inverting input of the power amplifier
11. Non inverting input 4.4
12. Inverting input of the amplifier 4.3
13. Output where the blanking pulse is available 1.2
14. Main supply voltage 21.4
15. Output of the flyback generator 1.4

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