초록 ▼

A circuit for simulating a slide wire device includes a pair of resistors connected electrically in series with a reference voltage source. Switching means are provided for alternately shorting the resistors in a duty cycle fashion such that when one of the resistors is shorted, the other resistor i

A circuit for simulating a slide wire device includes a pair of resistors connected electrically in series with a reference voltage source. Switching means are provided for alternately shorting the resistors in a duty cycle fashion such that when one of the resistors is shorted, the other resistor is unshorted. By adjusting this duty cycle, the output provided by the circuit is adjusted and a slide wire device simulated.

대표청구항 ▼

A circuit for simulating electrically a slide wire device with the apparent setting of said slide wire device being dependent upon an input signal, comprising: first and second electrical resistors, connected electrically in series, first and second electrical switching means, each having a control

A circuit for simulating electrically a slide wire device with the apparent setting of said slide wire device being dependent upon an input signal, comprising: first and second electrical resistors, connected electrically in series, first and second electrical switching means, each having a control input and a pair of switch terminals, and each providing electrical connection between said switch terminals in response to a switch control signal applied to said control input, said first electrical switching means connected electrically in parallel with said first electrical resistor, and said second electrical switching means connected electrically in parallel with said second resistor, reference voltage means for applying a reference voltage across the series connection of said first and second resistors, and means, responsive to said input signal, for providing switch control signals to said control inputs of said first and second switching means to actuate cyclically said first and second switching means to opposite switching states, whereby one of said first and second switching means is closed when the other of said first and second switching means is open such that said first and second resistors are alternately shorted electrically, and whereby outputs are provided across said first and second resistors which simulate a slide wire device in output impedance and output voltage levels.