![Electronic apparatus for biological research. Electronic apparatus and appliances; Biology -- Research. COMPLETE PIECES OF TRANSISTOR APPARATUS of the input resistance, Ri^, of the amplifier the device feeds, to R. This Electronic apparatus for biological research. Electronic apparatus and appliances; Biology -- Research. COMPLETE PIECES OF TRANSISTOR APPARATUS of the input resistance, Ri^, of the amplifier the device feeds, to R. This](https://c8.alamy.com/comp/RD60JD/electronic-apparatus-for-biological-research-electronic-apparatus-and-appliances-biology-research-complete-pieces-of-transistor-apparatus-of-the-input-resistance-ri-of-the-amplifier-the-device-feeds-to-r-this-particular-circuit-is-therefore-better-for-thermionic-amplifiers-where-i-is-high-it-has-been-used-with-a-valve-amplifier-by-flemingquot-who-reported-a-drift-equivalent-to-a-signal-at-the-input-of-only-100-ju-per-hour-a-silicon-diode-chopper-or-more-strictly-modulator-intended-to-feed-a-transistor-amplifier-has-been-described-by-moody-the-circuit-is-shown-in-RD60JD.jpg)
Electronic apparatus for biological research. Electronic apparatus and appliances; Biology -- Research. COMPLETE PIECES OF TRANSISTOR APPARATUS of the input resistance, Ri^, of the amplifier the device feeds, to R. This
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