So you're using an IR Lamp to activate all of the IR photo-transistors on the Optical Interrupter Board? I have never seen an IR Lamp on a electronic technicians work bench they must be not common to find IR lamps?
Good Question! Technically, the lamp is UV (Ultraviolet - 100 to 400nm). The phototransistors are designed to work in the IR (Infrared - 700 to 1100nm) spectrum. Since the tolerance on the lamp is not great and the tolerance on the phototransistors isn't great, there is enough light in the overlap shared wavelength to activate them. I primarily use the lamp to cure UV Paint/Mask and Adhesives/Resin/Epoxy.
@@earlywilliamselectronics-a4799 ok thanks because not all IR transmitters circuits and IR receivers circuits use the SAME IR Frequencies also. Even if you have an IR light it might be transmitting a different IR Frequency than what the IR receiver was set at, so you have to MATCH up the IR Frequencies for it to work correctly. So I thought the UV Lamp was on a different IR frequency compared to the IR Photo Transistors IR Frequency. I would have never thought of using a UV lamp to activate IR photo Transistors since UV is on a totally different frequency spectrum which I'm surprised it even worked.
So you're using an IR Lamp to activate all of the IR photo-transistors on the Optical Interrupter Board? I have never seen an IR Lamp on a electronic technicians work bench they must be not common to find IR lamps?
Good Question! Technically, the lamp is UV (Ultraviolet - 100 to 400nm). The phototransistors are designed to work in the IR (Infrared - 700 to 1100nm) spectrum. Since the tolerance on the lamp is not great and the tolerance on the phototransistors isn't great, there is enough light in the overlap shared wavelength to activate them. I primarily use the lamp to cure UV Paint/Mask and Adhesives/Resin/Epoxy.
@@earlywilliamselectronics-a4799 ok thanks because not all IR transmitters circuits and IR receivers circuits use the SAME IR Frequencies also. Even if you have an IR light it might be transmitting a different IR Frequency than what the IR receiver was set at, so you have to MATCH up the IR Frequencies for it to work correctly. So I thought the UV Lamp was on a different IR frequency compared to the IR Photo Transistors IR Frequency. I would have never thought of using a UV lamp to activate IR photo Transistors since UV is on a totally different frequency spectrum which I'm surprised it even worked.