Tone circuits with fret-like steps fitted to individual guitar pickups

A switching guitar pickup tone circuit in five embodiments, comprising of a 1-pole, or 2 or more throw switch, mechanical or solid state, preferably an instantaneous or make before break or shorting switch, to place different resistor-capacitor series circuits in parallel with a guitar or guitar pickup output, the output considered to be a two terminal device with designated first and second output terminals, either of which can be considered the high terminal with the other considered low, with each active throw of the switch changing the resistor-capacitor series circuit, which thus limits and changes the bandwidth of said output in fret like logarithmic steps with each throw of the switch, with an optional inactive switch throw at one end of the throw sequence which places no equivalent resistor-capacitor series circuit in parallel with the guitar or pickup output, to wit:

• a. a first embodiment with each throw of said switch connecting to two or more separate tone capacitors, each tone capacitor connected between a switch throw and a common connection with all the other tone capacitors, the tone capacitor values chosen to produce fret-like logarithmic steps in output bandwidth, the pole of the switch connected to a first output terminal, or to an optional resistor connected to the first output terminal, the common connection with all the tone capacitors connected either to a second output terminal, or to an optional resistor connected to a second output terminal, when the optional resistor is not connected to the first output terminal, and
• b. a second embodiment with a 1-pole switch of 2 or more throws, each throw connecting to a separate node in a set of resistors connected in series, all but one of the resistors connected between the throws of the switch, the remaining resistor connected by its first terminal to a throw an an end of the sequence of throws, with its second terminal connected to a first terminal of a single tone capacitor, the pole of the switch being connected to a first output terminal and the second terminal of the single tone capacitor being connected to the second output terminal, such that the throws of the switch advancing away from the single tone capacitor increase the resistance in series with it to produce fret-like logarithmic steps in output bandwidth, and
• c. a third embodiment, similar in circuit topology to the second embodiment, with the single tone capacitor of the second embodiment being replaced by an optional single tone resistor in the third embodiment, and the series of resistors in the second embodiment being replaced by a series of capacitors in the third embodiment, such that as the switch throws advance away from the optional single tone resistor, the effective tone capacitance in series with said optional tone resistor decreases to produce fret-like logarithmic steps in output bandwidth, and
• d. a fourth embodiment, wherein each active throw connects to a different series combination of tone resistor, which tone resistor may be a short circuit, in series with a tone capacitor, such that the advance of throws changes the output bandwidth in fret-like logarithmic steps, and
• e. a fifth embodiment, similar in circuit topology to the first embodiment, with the single tone resistor in the first embodiment being replaced by a single tone capacitor in the fifth embodiment, and the tone capacitors in the first embodiment being replaced by tone resistors in the fifth embodiment, such that as switch throws advance away from the single tone resistor, the output bandwidth advances in fret-like logarithmic steps.