Laser Power Meter
Brief explanation of how the circuit works (refer to schematic below)
Schematic and Board Layouts (.pdf):
Schematic using decimal points 1, 2, & 3
Schematic using decimal points 2, 3, & 4
board layout silk
board layout tracks
board layout solder
board layout solder mirrored dp 123 (print this one for making boards)
board layout solder mirrored dp 234 (print this one for making boards)
drill layout
Express PCB Plus Schematic and Board Layouts (.sch & .rrb):
Express PCB Plus file using decimal points 1, 2, & 3
Express PCB Plus file using decimal points 2, 3, & 4
Express SCH Plus file using decimal points 1, 2, & 3
Express SCH Plus file using decimal points 2, 3, & 4
Pictures (.jpg):
Power Meter in use on optical table:
Front view of power meter on optical table
Side view of power meter on optical table
PIN in lens tube on optical table
Optical table zoomed out view
Finished product (DVM):
power meter front
power meter side & bottom
power meter side & connections
Finished product (PIN) in 1" lense tube:
PIN amp side view with out pot
PIN amp side view with pot
Photodidoe side
Photodidoe side side view
Photodidoe side with 15Ks in parallel
PCB (DVM):
PCB before drilling
PCB solder side with out regulator & switch installed
PCB solder side with regulator & switch installed
PCB side with labels
Close up of R2, R3, C14 gain on 100X amp
PCB before U1D buffer mod view 1
PCB before U1D buffer mod view 2
PCB with U1D buffer mod
PCB testing 1
PCB testing 2
Added three jumpers to put the decimal point in the correct place
Top & side views (DVM):
Top view of PCB without DPM & switch
Top view of PCB with DPM & switch
Top view of PCB with DPM, switch, and standoffs
Side view of PCB without DPM & switch
Side view of PCB with DPM & switch view 1
Side view of PCB with DPM & switch view 2
Lid with bezel (DVM):
Lid with Bezel & standoffs (top view)
Lid with Bezel & standoffs (top side view)
Lid with Bezel & standoffs (bottom view)
Lid with Bezel & standoffs (bottom side view)
Enclosure (DVM):
Drill label taped to lid before drilling/machining
Enclosure with feet and holes for PIN & power