Maker Pro
Login Join Maker Pro
Or sign in with

Menu

Connect With Us

Network

Recent content by Hobby Junkie

  1. H

    First Post - Help with Identifying Circuit Components

    Of course. Same on the forum that I moderate. And I AM VERY appreciative of the assistance.
  2. H

    First Post - Help with Identifying Circuit Components

    I would like to say but when I contacted the manufacturer for assistance, they claimed intellectual property and shut the door so I was left to my own devices to try to ascertain a methodology to fix it. They were willing to sell me another one "like" but not "exactly like" it for a wonderful...
  3. H

    First Post - Help with Identifying Circuit Components

    Yes I did notice the changes. And I agree, 1/2W or higher are way out of specs for this small circuit.
  4. H

    First Post - Help with Identifying Circuit Components

    Definitely a laser driver circuit with two positions, High and Low controlled by the 33kohm and 13 kohm resistors. I think I answered these with the posting of the trace PCB and the switch. If not, let me know and I will try to do better. Not sure I understand what you mean. If I read this...
  5. H

    First Post - Help with Identifying Circuit Components

    73's de Edd Here is a pic of the traces with the components removed. Here is a pic of the 2 row X 3 pin switch. The "sketch" of the area dotted in red line is correct as drawn (from what I can ascertain). There are only 6 pins on the switch, not eight. And if numbered from left to...
  6. H

    First Post - Help with Identifying Circuit Components

    Dave, I measured it on both the CAP and OHM settings. And you were correct. On the CAP setting I get 4.58uF and 4.66uF when reversed (apparently verified by the previous post). On the OHM setting, I get 9 MEGA ohm increasing steadily and reversed I get 10 MEGA ohm increasing steadily...
  7. H

    First Post - Help with Identifying Circuit Components

    Did not see you were in Australia. After 1AM here so I have to call it a night. It will be another sunny day in Florida tomorrow but at times I wish I was still there. I only spent a short time in Alice Springs but would like to come back and visit again. This unit was manufactured in...
  8. H

    First Post - Help with Identifying Circuit Components

    550 MEGA Ohms, but fluctuates as expected. Does not act like a Cap when I use my cap tester on it.
  9. H

    First Post - Help with Identifying Circuit Components

    Of course you are right. I'll get that corrected. I thought the Anode was POS and the Cathode was NEG.
  10. H

    First Post - Help with Identifying Circuit Components

    Does it make more sense drawn this way.....
  11. H

    First Post - Help with Identifying Circuit Components

    Don't know. The schematic is accurate about the cap. I removed it from the board just to make sure that the circuit was correct. I will post a picture of the board in the AM with the component removed, and I will update the switch as to how it makes contact. That is correct. When the...
  12. H

    First Post - Help with Identifying Circuit Components

    It's not. It is a three position switch. The middle position is off. I will mark the schematic accordingly with the left side low power, middle is off, and right side is high power. The left position (low power) activates the positive side of the circuit (upper pin) while the bottom pin...
  13. H

    First Post - Help with Identifying Circuit Components

    Dave I do think that it is a diode. I took it off the board and here are some better pictures of it. It has only 2 contact points and I am still pretty sure that it is marked "ASb" not "A5*" Based on the circuit design, I think it is used as a protection component in a current limiter...
  14. H

    First Post - Help with Identifying Circuit Components

    Thank you as well. I was not sure about the PD B-E markings and am glad that you saw that and pointed it out to me. As mentioned in the previous post, I was wondering whether it was an "5" or an "S" as well?? There is only 1 cap of 1uF on the board as the decoupler??? It is the only cap on...
  15. H

    First Post - Help with Identifying Circuit Components

    Thanks Dave. I did some research before hand and did find the BC817 and saw that the marking code 6CW (W indicating China manufacture) as a NPN transistor. I also found the 5AW as a BC807 PNP again with the W indicating manufactured in China but was not 100% because it was listed as a BC807-16...
See more
Top