PSU 6V 3A assembly notes 2012年7月4日 下午11:11累計瀏覽次數 113http://blog.yahoo.com/_ZGD2MIDSBMSKHSUJW23LXRS2EQ/articles/577966
Now I have mounted an old 12V input, 6V 3A output PSU on a 15cm x 20 cm acrylic glass. But I have forgotten the details of this old 6V PSU. So I googled "tlfong01 PSU 6V" and got the following old blog post.
PSU 6V 3A power supply
http://blog.yahoo.com/_ZGD2MIDSBMSKHSUJW23LXRS2EQ/articles/536636
I don't know why the motor seems too weak to encounter the my de Prony brake torque meter, even at 12V 90% duty cycle. I have the feeling that PWM control is not that efficient, or that I should use 18V instead of 12V. But I don't want to burn another RMB32 37mm DC gear motor.
So I am thinking of using low DC3 V, 5V, and 6V without PWM to test the torque of the motors. I will be using 6V supply sooner or later when I play with stepping motor ad servo motor after the LMD18200 DC motor project. So for long term playing, I am placing my old 6V 3A supply in another blue box, before starting testing
.END
Regulated 6V 3A power supply - old posts to refresh memory 2011年7月19日 累積瀏覽 75
tlfong01-diy > 搜尋 mj2955 的相關網誌：共12篇，以下為1-10篇。
- based 24V input, 12V (9V ~ 18V) output regulator" src="http://blog.yimg.com/3/AP.cVZZ7s58P7EQMW_0svInYI6M8atrkvFgtxY15OD4EtgBJJS6bUg--/72/l/j_8k6mWW0VD6qZRyio9hkg.jpg" width=100>
MJ2955
- Now I have made the following improvements to the MJ2955 based voltage regulator. 1. Heavy duty (AWG22) wires replacing AWG26...
- hFE Test" src="http://blog.yimg.com/3/AP.cVZZ7s58P7EQMW_0svInYI6M8atrkvFgtxY15OD4EtgBJJS6bUg--/79/l/zadlmt0Jh3t7pvhI9rsfOw.jpg" width=100>
MJ2955
- ...am using my cheap, HKD30 digital multimeter UNI-T DT830B to test the h FE of my MJ2955. UNI-T DT830B digital multimeter http://www.hobby-hour.com/electronics/dt830b-digital-multimeter...
- PNP Power Transistor" src="http://blog.yimg.com/3/AP.cVZZ7s58P7EQMW_0svInYI6M8atrkvFgtxY15OD4EtgBJJS6bUg--/74/l/In0JCmWtVOZb4.p_H_nMZQ.jpg" width=100>
MJ2955
- ...Holiday - Day 2 No HKD8,000 Olympus EP-2 to play. So I play with my new RMB3.5 toy, the MJ2955 PNP power transistor. I have hours of experience with 2N3055, but I have no experience...
- current booster" src="http://blog.yimg.com/3/AP.cVZZ7s58P7EQMW_0svInYI6M8atrkvFgtxY15OD4EtgBJJS6bUg--/75/l/fgyqSHT96TXxJvXdlxeuWw.jpg" width=100>
MJ2955
- Since the S9 12V power supply already has a short circuit protection, I will not use short circuit protection in my first attempt of MJ2955 based current booster. .END
- hFE test results" src="http://blog.yimg.com/3/AP.cVZZ7s58P7EQMW_0svInYI6M8atrkvFgtxY15OD4EtgBJJS6bUg--/71/l/YHLPpmd140ZLYT31vpCjPA.jpg" width=100>
MJ2955
- ...long leg resistorsas extenders and successuly tested the two MJ2955s in hand have hFE of around 156 and 154. Actually I repeated the tests...
- /2N3055" src="http://blog.yimg.com/3/AP.cVZZ7s58P7EQMW_0svInYI6M8atrkvFgtxY15OD4EtgBJJS6bUg--/73/l/Pg7lt8kI93swn1.8qzb3ww.jpg" width=100>
MJ2955
- ...read the FreeScale MC7806 voltage regulator IC, I found they are using MJ2955 as current booster. I also read from googled expert s blogs that 2N3055 can also be...
- ...time was the first time I used MJ2955 to make a voltage regulator, so I had...transistor, and R is for biasing MJ2955. In other words, I should have ...
- ... two old posts to refresh my memory. So I now remember that this MJ2955 based 24V stepping down to 12V has good regulation - it only...
- ... http://hk.myblog.yahoo.com/tlfong01@yahoo.cn/article?mid=1489 Servo Power Supply Design - MJ2955/2N3055 http://hk.myblog.yahoo.com/tlfong01@yahoo.cn/article?mid=1467 Robot Arm Power Supply Setup...
- ... to add up to 16 volts, or 24V DC desktop power supply. 2. 12V DC MJ2955 based current boosted 7812 regulated voltage supply about 5A...
tlfong01-diy > 搜尋結果 搜尋 6v psu 的相關網誌：共9篇，以下為1-9篇。
- testing 6V, 6A limit" src="http://blog.yimg.com/3/AP.cVZZ7s58P7EQMW_0svInYI6M8atrkvFgtxY15OD4EtgBJJS6bUg--/96/l/W7.i2Pzx4uAvKgWPA.ZpNQ.jpg" width=100>PSU
- So I am using a 2 Ohm 2W sensing resistor and check out if my MG996R PSU can give 6A at 6V. .END
-
- - MJE2955 Analysis and Design 1" src="http://blog.yimg.com/3/AP.cVZZ7s58P7EQMW_0svInYI6M8atrkvFgtxY15OD4EtgBJJS6bUg--/95/l/p9CKdYVtfXDnq08otHWVZA.jpg" width=100>
PSU
... case hfe of 6, then Ibesat = 6A/6 = 1A So to summarise MG996R PSU v1.0 spec. 1. Voltage = 6V 2. Current = 6A maximum, 2A short circuit (MJE2955 short curcuit protection current). 3. Vcesat... - testing" src="http://blog.yimg.com/3/AP.cVZZ7s58P7EQMW_0svInYI6M8atrkvFgtxY15OD4EtgBJJS6bUg--/67/l/JvOUqioneepHV9_XFBWl3A.jpg" width=100>
PSU
- ...100 mA 11.2V/11.9V 700 mA 9.7V 900 mA 5.6V + 5V Current vs Voltage results 0V 4.8V 1.5A 4.5V My conclusion is that the PSU should be good to supply 1A for 5V, and 200 mA...
- Test 1" src="http://blog.yimg.com/3/AP.cVZZ7s58P7EQMW_0svInYI6M8atrkvFgtxY15OD4EtgBJJS6bUg--/0/l/uiUgYoVnJS3gY2xOWH7unA.jpg" width=100>
PSU
- ...So I need to do hardware debugging. So I removed the 12V input and 6V output connector to prepare checking any wrong or missing connections...
- Now I have mounted a 3-digit volt meter to check the 220V AC/+12VDC 12V 3.2V PSU output. The pinout for the LED is as below. Pin 1 - Power supply (+6V ~ 12V+ Pin 2 - Ground Pin 3. Input .END
- ... 5V, but another needs at least 6V to 18V. The big problem with the current meter...I found this a big problem. So for the PSU now, I am using analog meters...
- So I have started building my 6V ~ 7.2V power supply for TowardPro MG996R servo. This...the input broad, taking +12V from the S9 PSU. Since this is a heavy duty PSU for servo...
- 1. Right - S9 PC mini PSU, =12V, +5V, +3.3V, -12V. The 5V source can be ...source is used as input to the two other 6V supplies. 2. Middle - MC7806 based 6V...
- ...source is from the S9 mini PC compatible PSU, with +12V, +5V, + 3.3V and -12V. I am ...7A) as input to the MC7806 + MJE2955 based 6V 4A regulated power supply for the robot....END
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