Question 1

Can this take 20vdc 5amp to output 120vac 0.5amp? The output needed is 40w continuously. Would that work?

Accepted Answer

Based only on the specs yes this board should be capable of this, I have never drawn continuously that much power from it. But keep in mind too that this is not a 60 hz sine output either. This is a noisey approx. 20 khz square wave that many circuits do not work well with.

Question 2

Is the output electrically isolated from the input?

Accepted Answer

The input voltage terminals are insulated from surrounding environments on the board.  If not, it would short out.  I own one of these boards and I use it to power a 20 watt 110volt ac led bulb.  Your not going to operate much with these units, but they work as described.

Question 3

How do i get power on the a/c side.  i have 12vdc going in, but when i touch my multi-meter leads to the contacts(v0-v2) i get no a/c power.

Accepted Answer

You will get AC voltage once you apply a load to the output. Just not in the traditional sense. Inverters are a little weird when it comes to that....One of the reasons, as previously stated in another users comment, is that the frequency is much higher....which is technically true but not in the sense that compares to the 60hz you get from a wall outlet in your house. These inverters (all inverters do this) create an artificial sine wave using PWM (Pulse Width Modulation). What they are really doing to turning the transistors on and off incredible fast (~10-20 kHz), and are chopping the DC voltage up into smaller chunks. Think of this like a Riemann Sum for my math nerds out there. So the transistor is switching at a rate of 10-20kHz but thats because is creating an artificial sine wave that is oscillating at 60Hz just like your wall outlet. Because of this, it can screw up your multimeter readings because the multimeter gets confused by the high frequency switching if it's a lower quality inverter. Nevertheless, this will power your 120VAC components because the carrier frequency of the transistor is so high (10-20kHz) that the load doesn't even see it....depending on what your load is....All it sees is the artificial 120V AC sine wave oscillating at 60Hz. If you want to get a better understanding, hook up an oscilloscope to the output and you'll see the PWM in action

Question 4

Can i use this to power a 120v-240v input control device that outputs 12v dc 3a for a lock control system?

Accepted Answer

No.

ASIN	B07MMMNCQL
Antenna Location	Workshop
Best Sellers Rank	#454,828 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #1,996 in Power Converters
Brand	Actmei
Built-In Media	1 x 150W Inverter Boost Circuit Board
Color	Yellow
Customer Reviews	3.4 out of 5 stars 69 Reviews
Electrical Output Waveform	Square Wave
Frequency	20 KHz
Input Voltage	220 Volts
Inverter Capacity Volt-Amp	150
Item Dimensions L x W x H	2.3"L x 2.3"W x 1"H
Item Weight	2.72 Ounces
Manufacturer	Actmei
Mfr Part Number	GZF027
Model Name	High Voltage Boost Converter
Model Number	784237061163
Output Power	150 Watts
Output Voltage	220 Volts
Peak Output Power Watts	150
Power Source	DC Powered
Recommended Uses For Product	Workshop
Standby Power Shutoff	97.22%
UPC	784237061163
Voltage	12 Volts (DC)
Wattage	150 watts

High Voltage Boost Converter DC-AC 12V to 110V 220V 175V AC 150W Inverter Boost Board Transformer

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