help needed with light dependent resistor devices ldrs can some kind soul provide me with information on ldrs that contain an onboard light source in a totally integrated and light shielded unit i have seen a vtl c ldr in some schematics so who are the manufacturers of these devices and what are the different types thanks very much in advance jim jim trivellas department of electrical electronic engineering school of information technology electrical engineering the university of melbourne parkville victoria australia telephone email jimt mullian ee mu oz au hello is that the front desk allan holdsworth the spid
