* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download Brief Description of TEM-PS Schematic
Ground loop (electricity) wikipedia , lookup
Electrical ballast wikipedia , lookup
Power engineering wikipedia , lookup
Variable-frequency drive wikipedia , lookup
Current source wikipedia , lookup
Power inverter wikipedia , lookup
Distribution management system wikipedia , lookup
Electrical substation wikipedia , lookup
Pulse-width modulation wikipedia , lookup
Analog-to-digital converter wikipedia , lookup
Amtrak's 25 Hz traction power system wikipedia , lookup
Three-phase electric power wikipedia , lookup
Schmitt trigger wikipedia , lookup
Resistive opto-isolator wikipedia , lookup
Power MOSFET wikipedia , lookup
History of electric power transmission wikipedia , lookup
Surge protector wikipedia , lookup
Voltage regulator wikipedia , lookup
Stray voltage wikipedia , lookup
Alternating current wikipedia , lookup
Buck converter wikipedia , lookup
Voltage optimisation wikipedia , lookup
Switched-mode power supply wikipedia , lookup
Brief Description of TEM-PS Schematic G. Haller V2 9/19/03 Top-Sheet: On the left side is the connector to the LAT-Power Distribution Unit. 28V power is incoming from the PDU, some voltage and temperature monitoring signals are output. The 28V is filtered (MIL-461) in the filter block and connected to four main blocks Calorimeter switch block. Here the 28V to the calorimeter supplies is enabled/disabled via an enable signal from the TEM DAQ board. Tracker switch block. Here the 28V to the tracker supplies is enabled/disabled via an enable signal from the TEM DAQ board. Buck-Sync Block: in case the converters need to be synchronized, an oscillator is incorporated in the board DAQ power: generates 2.5V and 3.3V for TEM DAQ board The switched calorimeter power is connected to the calorimeter low voltage block, generating 3.3V analog and 3.3V digital voltages, and the high voltage block, generating up to 100V (adjustable via a programmable analog voltage on the TEM DAQ board). The switched tracker power is connected to the tracker low voltage block, generating 1.5V analog, 2.5V analog, 2.5V digital voltages, and the high voltage block, generating up to 150V (adjustable via a programmable analog voltage on the TEM DAQ board). The resistors on the top-level are used to derive the currents (total and for the HV supplies) via ADC’s on the TEM DAQ board. The connector on the right side is the TEM-DAQ board connector. The cal and tkr voltages are connected via the TEM-DAQ board to the sub-systems. CAL and TKR low-voltage sheets: The sub-system voltages are generated from the 28V via MAX726 converters. At the output an additional LC filter is added. The TKR 1.5V is generated by summing an external reference voltage in the feed-back of the Maxim since the Maxim on-chip reference is higher than 2V. The npn transistors are used to synchronize the converters. DAQ sheet: Since the ACTEL 36S series FPGA’s (on the TEM DAQ board) require that the 3.3V is applied delayed in respect to the 2.5V, a delay circuit is incorporated into the DAQ block. High-Voltage Supply Block: The booster coil (330uH) is charged by the bipolar transistor Q504. Control of the onstate of Q504 is through Q501, Q502, off-state through Q505. These transistors are driven by two non-overlapping pulses (N65, N67). A voltage doubler stage D501, D507, D508 limits the voltage to each diode to 75V. Modulation of the driving amplitude is done similarly to A. Ruitbergs design, through the divider R507 and R508 in conjunction with the output of the feedback loop coming from U504.