ON your issue with the PTO, The two wire's power a electromagnet , ( I am assuming ) The windings in the magnets coil will generate a very high Voltage when switched off and will ( whats known as a voltage spike ) damage other electronic equipment ( like your new regulator ) . The diode is there to short out only the reverse voltage spike. And is connected with its cathode end to the B+ to the coil and the anode to the B- side. If your not familiar with diode's this can be tested for proper connecting by the use of a ( mechanics test light ). It is just like a ( liquid check valve ) in operation . Any coil of wire is very simply an ignition coil when you think it through. Remove the power ( ie, points open ) and the magnetic field around the coil collapses and produce's a higher voltage than applied too. Hope this helps you understand this a bit more.
Charge problem Honda 20HP engine
- Thread starter mc_harley
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ON your issue with the PTO, The two wire's power a electromagnet , ( I am assuming ) The windings in the magnets coil will generate a very high Voltage when switched off and will ( whats known as a voltage spike ) damage other electronic equipment ( like your new regulator ) . The diode is there to short out only the reverse voltage spike. And is connected with its cathode end to the B+ to the coil and the anode to the B- side. If your not familiar with diode's this can be tested for proper connecting by the use of a ( mechanics test light ). It is just like a ( liquid check valve ) in operation . Any coil of wire is very simply an ignition coil when you think it through. Remove the power ( ie, points open ) and the magnetic field around the coil collapses and produce's a higher voltage than applied too. Hope this helps you understand this a bit more.
mc_harley
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Hi Ekap 1200,
Thanx for your info about the diode. This was what I wanted to know because my rectefier whas burned after this diode was blown up. The new rectifier is still working but I didnt connect the PTO yet. Because the diode was blown up I don't know what diode it was. How can I figure out what diode I should use for the blown one.
Mc_harley
Thanx for your info about the diode. This was what I wanted to know because my rectefier whas burned after this diode was blown up. The new rectifier is still working but I didnt connect the PTO yet. Because the diode was blown up I don't know what diode it was. How can I figure out what diode I should use for the blown one.
Mc_harley
Hello from NJ USA. You can use a 1N4001 series diode , these are a common item in most electronics stores or online store. Now when you hook it up, have a test light handy if your not familiar with diode marking, with the test lamp connected to a good ground, find the B+ ( positive ) wire that will power the pto coil.. hold the end of the diode to that wire and with the test light to the opposite end of the diode, your light should ( not ) light up, if it does just reverse the diode and test again. Note how you have the diode when connected correctly. There will be a line around it on one end. No power is allowed to go through the diode when connected correctly. The high voltage spike is actually reverse polarity but that's what will kill other electronic components in the system. Any questions just post them and you will be a diode expert in no time. Gene
mc_harley
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Thanx Ekap1200,
I knew what side I had to place the diode to because there was still a peace on the blue (pos) wire and that was exactly like you wrote the other wire is brown and is connectet to ground. I just wasn't shure if the last owner knew that too because he was repairing the mower and quit after a while. So I bought some mess but now it works. The mowingdeck is the last thing I had to do.
Mc_harley (NL)
I knew what side I had to place the diode to because there was still a peace on the blue (pos) wire and that was exactly like you wrote the other wire is brown and is connectet to ground. I just wasn't shure if the last owner knew that too because he was repairing the mower and quit after a while. So I bought some mess but now it works. The mowingdeck is the last thing I had to do.
Mc_harley (NL)