摘要 |
<p>A bi-directional switch (20) comprising first and second semiconductor switching devices (22), a current sensor (RS) connected in series with the switching devices (22), thereby forming a series circuit, a driver circuit (30) controlling the on/off operation of the first and second switching devices (22) are substantially simultaneously turned on and off, the driver circuit (30) turning the first and second switching devices (22) on in response to a control input and turning the first and second switching devices (22) off when current in the current sensor (RS) substantially drops to near a zero current. A discharge sustain driver circuit employing the bi-directional switches (20) for a plasma display panel (PDP) is also described.</p> |