Hello, I am wanting to generate 24VAC and be able to pull a maximum of 1.5 amps off it (more typically 0.5 to 1.0 amp continuously). I have 36VDC or 42VDC available from a power adapter, such as one of these ( 2 examples ):
36VDC Power Adapter
42VDC Power Adapter
My original thought was to generate a 60Hz pulse with something like a 555 timer or a similar configuration, run it to a high current capable op-amp (provide the op amp with +36VDC and -36VDC), or a combination of op-amp and transistor configuration to boost current capabilities, then the output would be the 24VAC @ 60 hz that I could then pull up to 1.5 amps off it. I would need to generate the -36VDC for the op-amp, so was thinking somekind of charge pump or negative output configured voltage regulator, like a CS5172 for example.
Am I on the right track here?
You might ask why I can't just get a 24VAC power adapter / transformer, but this is not the rout I want to go for a number of reasons (24VAC @ 1.5 amps requires 40VA transformer. They are bulky and don't fit the look or form factor for this project. I need the DC voltage anyways for other parts of the circuit, so I would like to generate this 24VAC from the DC rails I have available if possible).
Thanks and any help or advice is greatly appreciated!
36VDC Power Adapter
42VDC Power Adapter
My original thought was to generate a 60Hz pulse with something like a 555 timer or a similar configuration, run it to a high current capable op-amp (provide the op amp with +36VDC and -36VDC), or a combination of op-amp and transistor configuration to boost current capabilities, then the output would be the 24VAC @ 60 hz that I could then pull up to 1.5 amps off it. I would need to generate the -36VDC for the op-amp, so was thinking somekind of charge pump or negative output configured voltage regulator, like a CS5172 for example.
Am I on the right track here?
You might ask why I can't just get a 24VAC power adapter / transformer, but this is not the rout I want to go for a number of reasons (24VAC @ 1.5 amps requires 40VA transformer. They are bulky and don't fit the look or form factor for this project. I need the DC voltage anyways for other parts of the circuit, so I would like to generate this 24VAC from the DC rails I have available if possible).
Thanks and any help or advice is greatly appreciated!