Analog circuits

Digital circuits deal, in principle, with only two values of voltage, whereas analog circuits process signals with continuous variation of voltage. In fact, of course, no macroscopic signal is truly quantized, so even a digital circuit designer needs some familiarity with analog electronics. These notes will provide a very basic introduction to the capabilities of analog circuitry. You may also need to review the elementary analysis of passive DC and AC circuits as found in a freshman physics text.