Device for measuring residual voltage and energy in a piece of equipment

A device for measuring the voltage between the contacts of a male connector of a piece of electronic equipment after it has been disconnected from a source of AC power for a given period of time, said male connector having a high voltage contact and a low voltage contact, said device comprising in combination:

• female connector means having a high voltage contact and a low voltage contact for receiving a high voltage contact and a low voltage contact of a male connector from a piece of equipment,
• means for connecting said device to a source of AC current, said means for connecting including a high voltage connector means and a low voltage connector means,
• first switch means for selectively connecting and disconnecting said high voltage connector means to said high voltage contact of said female connector means,
• voltage measuring means,
• first circuit means for connecting said voltage measuring means across said high voltage contact and said low voltage contact of said female connector means,
• second circuit means for connecting said voltage measuring means between said high voltage contact and a safety ground,
• third circuit means for connecting said voltage measuring means between said low voltage contact and a safety ground,
• second switch means for selectively connecting one of said first circuit means, said second circuit means and said third circuit means,
• relay means between said second switch means and said voltage measuring means for selectively connecting and disconnecting said voltage measuring means to said second switch means,
• timing means,
• control means responsive to said timing means and said first switch means and connected to said relay means for switching said relay means to connect said voltage measuring means to said second switch means after said first switch means has disconnected said high voltage connector means from said high voltage contact of said female connector means for a given period of time.

A device for measuring the residual electric energy stored between the contacts of a male connector of a piece of electronic equipment after it has been disconnected from a source of AC power for a given period of time, said male connector having a high voltage contact and a low voltage contact, said device comprising in combination:

• female connector means having a high voltage contact and a low voltage contact for receiving a high voltage contact and a low voltage contact of a male connector from a piece of equipment,
• means for connecting said device to a source of AC current, said means for connecting including a high voltage connector means and a low voltage connector means,
• switch means for selectively connecting and disconnecting said high voltage connector means to said high voltage contact of said female connector means,
• electric energy measuring means,
• relay means for selectively connecting and disconnecting said electric energy measuring means across said high voltage contact and said low voltage contact of said female connector means,
• timing means for measuring a given period of time,
• control means responsive to said timing means and said switch means and connected to said relay means for switching said relay means to connect said electric energy measuring means across said high voltage contact and said low voltage contact after said switch means has disconnected said high voltage connector means from said high voltage contact of said female connector means for said given period of time.

A device for measuring the residual electric energy stored between the contacts of a male connector of a piece of electronic equipment after it has been disconnected from a source of AC power for a given period of time, said male connector having a high voltage contact and a low voltage contact, said device comprising in combination:

• female connector means having a high voltage contact and a low voltage contact for receiving a high voltage contact and a low voltage contact of a male connector from a piece of equipment,
• means for connecting said device to a source of AC current, said means for connecting including a high voltage connector means and a low voltage connector means,
• first switch means for selectively connecting and disconnecting said high voltage connector means to said high voltage contact of said female connector means,
• electric energy measuring means,
• first circuit means for connecting said electric energy measuring means across said high voltage contact and said low voltage contact of said female connector means,
• second circuit means for connecting said electric energy measuring means between said high voltage contact and a safety ground,
• third circuit means for connecting said electric energy measuring means between said low voltage contact and a safety ground,
• second switch means for selectively connecting one of said first circuit means, said second circuit means and said third circuit means,
• relay means between said second switch means and said electric energy measuring means for selectively connecting and disconnecting said electric energy measuring means to said second switch means,
• timing means,
• control means responsive to said timing means and said first switch means and connected to said relay means for switching said relay means to connect said electric energy measuring means to said second switch means after said first switch means has disconnected said high voltage connector means from said high voltage contact of said female connector means for a given period of time.

A device for measuring the voltage and stored electric energy between the contacts of a male connector of a piece of electronic equipment after it has been disconnected from a source of AC power for a given period of time, said male connector having a high voltage contact and a low voltage contact, said device comprising in combination:

• female connector means having a high voltage contact and a low voltage contact for receiving a high voltage contact and a low voltage contact of a male connector from a piece of equipment,
• means for connecting said device to a source of AC current, said means for connecting including a high voltage connector means and a low voltage connector means,
• first switch means for selectively connecting and disconnecting said high voltage connector means to said high voltage contact of said female connector means,
• voltage measuring means,
• electric energy measuring means,
• first circuit means for connecting said voltage measuring means and said electric energy measuring means across said high voltage contact and said low voltage contact of said female connector means,
• second circuit means for connecting said voltage measuring means and said electric energy measuring means between said high voltage contact and a safety ground,
• third circuit means for connecting said voltage measuring means and said electric energy measuring means between said low voltage contact and a safety ground,
• second switch means for selectively connecting one of said first circuit means, said second circuit means and said third circuit means,
• relay means between said second switch means and both said voltage measuring means and said electric energy measuring means for selectively connecting and disconnecting said voltage measuring means and said electric energy measuring means to said second switch means,
• timing means,
• control means responsive to said timing means and said first switch means and connected to said relay means for switching said relay means to connect said voltage measuring means and said electric energy measuring means to said second switch means after said first switch means has disconnected said high voltage connector means from said high voltage contact of said female connector means for a given period of time.