1. Block Diagram Transmitter Receiver × 2 Transmitter Power Supply ADC
Analog Channels from Receiver (Left & Right Rear)
Transmitter
Transmitter
Power Supply
(Eenas)
ADC
(Ayo)
IR Transmitter
(Kevin)
Analog
Digital
Infrared
Receiver × 2
Receiver
Power Supply
(Rick)
Amplifier
(Brian)
DAC
(Ayo)
IR Receiver
(Kevin)
Analog
Digital
Analog Channel to Speaker

2. Transmitter Power Supply
Block Description
Is an electrical device that transforms the standard wall outlet electricity (AC) into the lower voltages (DC).
Will supply voltage to both the Analog to Digital converter (ADC) and the Infrared transmitter (IR Transmitter).
Block Owner: Eenas Omari

3. Block Level Performance Requirements
* User Indicators and Displays:
- Indicator Parameter : Power on LED.
- Indicator Color and Type : Red LED.
- Indicator Viewing Environment: bright light, full darkness.
* Operation Modes:
- Power Mode: ON, OFF.
- Functional Mode: Normal.
* Electrical Interfaces:
Signal Type: Analog.
Signal Direction: Input, Output.
Input Voltage Range: 103 – 132 volts (AC).
Input Frequency Range: 57 – 63 Hz.
Output Voltage Range: 5, +12, -12 volts (DC).
Output Current max. : 400 mA
Block Owner: Eenas Omari

4. Block Level Standard Requirements
* Environmental:
Operating Temperature Range: 10 – 40 oC
Storage Temperature Range: 10 – 40 oC
Operating Humidity Range: 2 – 98 %Rh
Storage Humidity Range: 2 – 98 %Rh.
Block Owner: Eenas Omari

5. Transmitter Power Supply Block Signals
Block Owner: Eenas Omari

6. Over-voltage Protection will be considered in this design
Transmitter Power Supply Design
Voltage Regulator
(DC/DC)
+5 Volts
120 volts AC
Isolation
Rectifier
AC/DC
Conversion
Output
Input
Voltage Regulator
(DC/DC)
Isolation
Rectifier
AC/DC
Conversion
+15 Volts
Over-voltage Protection will be considered in this design
Negative
Voltage Regulator
(DC/DC)
-15 Volts
Block Owner: Eenas Omari

7. Block Architecture Transformer: 1 primary and 2 Secondary. Unless
Otherwise advised!!
Block Owner: Eenas Omari

8. Applicable Worst Case Analysis Plan
Sub Circuit
Type
Applicable Worst Case Analysis Plan
Task 1
Task 2
Task 3
Task 4
Task 5
Task 6
Task 7
Task 8
5VDC
Regulator
R, L & C Tol
R, L & C Specs
Over
Current Protect
V vs I Regulation
Power
Semi
J Temp
Power Semi
Package
Input Voltage
Range
15VDC
-15VDC
Xfmr Diode Bridge
Over Current Protect
Power Semi J Temp
Power Semi Package
Input Voltage Range
C Tol
C Specs
Output Voltage Ripple
Resistors
Nominal
Value/ Max value
Tolerance Around Nominal
Derated Power Capacity
Maximum Working Voltage
Maximum Constant Current
Maximum Surge Current
Composition Dielectric or Form
Capacitors
Q Factor or Frequency Variation
Block Owner: Eenas Omari

9. Key Component Selection
Type
Quantity
Power Rating
Tolerance
Voltage
Resistors
Film Carbon 6
0.25 Watts 5%
Capacitors
Tantalum
Electrolytic 3
20%
25V
35V
Diodes
Power 4
Transformers
Center-tapped
Step Down 1
Voltage Regulators
3-Terminal Adjustable
Positive/ 2
Negative/1
Block Owner: Eenas Omari

10. Selected transformer :
115 volts at 50/60 Hz with a series connection of 56V 2A.
Output DC voltage and current after rectification
To Find the filter capacitor value:
Block Owner: Eenas Omari

11. Finding the resistance values are according to the following equation:
For the negative voltage.
The adjustable current could be neglected because it’s so small ( in Micro Amps).
Block Owner: Eenas Omari

12. Resistance ratios: +5 volts DC: R2/R1 = 3. +15 volts DC: R4/R3 = 11.
R6 is selected to be 120 Ω:
-15 volts DC:
R5 = 11 X 120Ω = 1.32 kΩ .
Block Owner: Eenas Omari

13. Component Selection Components Symbol Value Resistors R1 R2 R3 R4 R5
2.2kΩ
6.8kΩ
2kΩ
22kΩ
180Ω
Capacitors C C1 C2 C3 C4 C5 C6
6800uF (
1.0 uF (tantalum)
10 uF (alum electrolytic)
1.0 uF ( tantalum)
10 uF (Alumelectrolytic)
1.0 uF ( Tantalum)
10 uF (aluminum Elec)
Block Owner: Eenas Omari

14. Bill of Materials

15. Device Package Prototype: For the LM137/LM337 Product: PCB Mount
-To-263 Package.
For the LM117/LM317A/LM317
-To-220 Package.
Product:
PCB Mount
Block Owner: Eenas Omari

16. Block Prototyping Plan
Name
Block Area (cm2)
Total PCB
Area (cm2)
PCB
Substrate
Type
Comp
Attachment
Socketed
Components
Types of
Connectors
Transmitter Power Supply
155
195
Outsourced
Direct Solder
N/A
IEC320
Cable
IEC320
Off Board Connector
Block Owner: Eenas Omari

17. Task-Resource Estimate Summary
Total hours:
Which includes:
* Project definition and system design
phases.
* Verification, integration and productization phase.
* Validation and presentation “final phase”.
Total cost of $71 (Which includes PCB board).
Block Owner: Eenas Omari