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by Tech_Marco
Sun Sep 20, 2009 6:48 pm
Forum: Digital Volt Current Meters
Topic: AC current meter connection diagram with a AC transformer
Replies: 0
Views: 2874

AC current meter connection diagram with a AC transformer

If you have a AC current meter that need a AC Shunt ("current transformer"), the following diagram show you the basic connection.
by Tech_Marco
Sun Sep 20, 2009 6:40 pm
Forum: RF Wireless Controller
Topic: Possible error in the 4 channel RF unit manual?
Replies: 2
Views: 1481

Re: Possible error in the 4 channel RF unit manual?

You got to tell me which one you have as we have a couple model, even though they are using the same chipset "1527" Also, you can double check it by using a digital meter to check the continuity.
by Tech_Marco
Sun Sep 13, 2009 12:26 pm
Forum: RF Wireless Controller
Topic: 4CH RF Remote Control Tx/Rx Kit (module)
Replies: 3
Views: 1836

Re: 4CH RF Remote Control Tx/Rx Kit (module)

Again, it's an indicator for the action. You can use it or without. It's really up to you. It's +5V whenever a button is press
by Tech_Marco
Sun Sep 13, 2009 12:24 pm
Forum: DSP X7
Topic: Specail Note: 3-Axis CNC Controller C1 issue
Replies: 2
Views: 1623

Re: Specail Note: 3-Axis CNC Controller C1 issue

All card being fixed by now.

Thank you
by Tech_Marco
Sat Sep 12, 2009 4:52 pm
Forum: RF Wireless Controller
Topic: 4CH RF Remote Control Tx/Rx Kit (module)
Replies: 3
Views: 1836

Re: 4CH RF Remote Control Tx/Rx Kit (module)

D0,D1,D2,D3 is the output
VT is an indicator for the output

Why not download the manual and read it?
by Tech_Marco
Sat Sep 12, 2009 4:50 pm
Forum: RF Wireless Controller
Topic: Programming the 8 channel system
Replies: 5
Views: 1910

Re: Programming the 8 channel system

This is NOT what you though the way we're doing here. We don't block IP for non-answered email .What made you think that way?! We block some IP because we received a lot of junk post like drugs and porno pictures that coming from those IP and may be yours was in the same group. There is no need to m...
by Tech_Marco
Mon Sep 07, 2009 1:22 am
Forum: RF Wireless Controller
Topic: 2CH RF controller with relay (IC chipset 1527) + Learning
Replies: 0
Views: 3111

2CH RF controller with relay (IC chipset 1527) + Learning

This is the manual for the latest 2CH RF controller. This controller is employing IC 1527 that make it so unique.
by Tech_Marco
Mon Sep 07, 2009 12:04 am
Forum: RF Wireless Controller
Topic: 4CH RF Control with relay (IC chipset: 1527) + Learning
Replies: 0
Views: 3265

4CH RF Control with relay (IC chipset: 1527) + Learning

This is the manual for the latest 4CH RF controller. This controller is employing IC 1527 that make it so unique. It now supports two modes for the 4CH model. CH1 & CH2 Toggle and CH3 & CH4 Momentary (only J1 and J2 short) Plus, CH1~CH4 can works indpendently in Toggle mode with J1 Open and ...
by Tech_Marco
Sun Sep 06, 2009 12:08 am
Forum: RF Wireless Controller
Topic: Programming the 8 channel system
Replies: 5
Views: 1910

Re: Programming the 8 channel system

Try to do 'Clean up' first before doing learning again see if it helps
8CH can be programmed in two group with two different modes; 1~4 and 5~8
by Tech_Marco
Sun Sep 06, 2009 12:05 am
Forum: Digital/ Analog Meter
Topic: 20A Current Meter (5735)
Replies: 1
Views: 1196

Re: 20A Current Meter (5735)

When a motor startup, it always draw more current then it's RMS rating. Sometimes it will drasw double! So, for safety, you better get 50A current meter or above. Or turn off the meter befor starting up the motor.

Yes, current meter should be connected in series to the load
by Tech_Marco
Fri Sep 04, 2009 2:30 pm
Forum: Digital Volt Current Meters
Topic: Connection layout for UP8035 and UP8135 meter
Replies: 0
Views: 4141

Connection layout for UP8035 and UP8135 meter

DIP switch #1 #2, #3 is used to set the decimal position
Make sure that the DIP#5 is in ON position if you're not planning to use it as a 2V meter. Very important. Failed to do so may get the meter burned out. It's 10:1 multiplier!

DIP #4 must set to ON if this is AC type meter
by Tech_Marco
Fri Aug 28, 2009 4:57 pm
Forum: Digital/ Analog Meter
Topic: Voltmeter HB8145
Replies: 1
Views: 1140

Re: Voltmeter HB8145

If there is a label for 6~15V, feel safe to power it by 12V and common ground is ok for our volt meter
by Tech_Marco
Thu Aug 20, 2009 11:42 am
Forum: DSP X7
Topic: Negative return wire from tube
Replies: 1
Views: 1288

Re: Negative return wire from tube

Doesn't matter which one is "L" and which one is "N". AWG#18 is more than enough. Current is as low as 30mA, so a AWG#24 is fine
by Tech_Marco
Sun Aug 09, 2009 10:55 am
Forum: DSP X7
Topic: Specail Note: 3-Axis CNC Controller C1 issue
Replies: 2
Views: 1623

Specail Note: 3-Axis CNC Controller C1 issue

Just found out that a batch of this controller(sold between July and August) may be installed a low voltage capacitor "C1" by mistake. It's supposed to be a 36V or 50V, 100uF capacitor be installed. It turned out that it can only support DC12V power. If it's powered by DC24V, it will cause...

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