Variable resistor RV1 is used to control the BASS, RV2 is used to control the Treble and RV3 is used to control the Volume. Resistor R7 gives the isolation between Bass and Treble. To operate the ...

Since the first demonstrations of radio-frequency (RF) circuits, the physics of the electromagnetic (EM) field and its regulation and control with codesigned circuits, have become essential ...

THE site of an old slate tip could become the first circuit for radio controlled cars in North Wales.