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Transistor pinout download8/21/2023 ![]() The signal from buffer then goes to a group of 10 comparators.Įach of this opamps are biased to an incrementing reference levels through the resistor divider series. This pinout is secured against over-voltage and reverse polarity signals. A high input impedance voltage follower buffer responds to the input pin#5 signals. The above basic LM3915 block diagram provides the general perception of the circuit’s functioning. The reference at pin#7 applied in an incremental order across the opamp non-inverting inputs through a ladder type resistor divider network. We can see how the opam comparators are arranged for processing the input signal at pin#5. The following diagram shows the internal layout of the IC.
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