An electronic direct voltage, DC, transformer circuit comprising: an input node adapted to receive input DC power from a direct voltage power source; a magnetic storage coupling unit comprising: a first set of windings coupled to a first bi-directional AC switch, the first bi-directional AC switch being configured to receive an input charging current associated with an input voltage; a second set of windings electrically in series with the first set of windings, the first and second set of windings (106, 107) being configured to share a common core; a second bi-directional AC switch connected with one end directly between the first and second set of windings (106, 107) and with another end to a common ground, the first and second bi-directional AC switches (108, 109) being configured to have a switching frequency in a kilohertz range and to switch between on and off in alternating modes; and an output node connected to the second set of windings, the output node adapted to provide an output DC power, the output DC power being adapted to have an output voltage V o with an amplitude based on the input voltage V s, wherein V o = K v V s and K v is a predefined transfer constant that is proportional to a duty cycle D of the first and second bi-directional AC switches (108, 109), such that D = Δt c Δt c + Δt d, Δ t c is a switching time from the first bidirectional AC switch being switched on to the second bi-directional AC switch being switched on, and Δ t d is the discharge time when the second bi-directional AC switch is on, such that the first bi-directional AC switch is configured to be switched off when the second bi-directional AC switch is configured to be switched on; wherein the magnetic storage coupling unit is configured to transfer DC power from the direct voltage power source to the output node using magnetic storage coupling provided by the first and second set of windings (106, 107) such as to receive input DC power and transfer direct voltage as the input DC power from the input node to the output node providing the output DC power such that the first set of windings and the second set of windings are configured to provide magnetic storage of energy based on each of the first and the second bi-directional AC switches being configured to be continuously switched; wherein when an output load is zero, the output voltage is configured to remain proportional to the input voltage by said V o = K v V s. an input node adapted to receive input DC power from a direct voltage power source; a magnetic storage coupling unit comprising: a first set of windings coupled to a first bi-directional AC switch, the first bi-directional AC switch being configured to receive an input charging current associated with an input voltage; a second set of windings electrically in series with the first set of windings, the first and second set of windings (106, 107) being configured to share a common core; a second bi-directional AC switch connected with one end directly between the first and second set of windings (106, 107) and with another end to a common ground, the first and second bi-directional AC switches (108, 109) being configured to have a switching frequency in a kilohertz range and to switch between on and off in alternating modes; and a first set of windings coupled to a first bi-directional AC switch, the first bi-directional AC switch being configured to receive an input charging current associated with an input voltage; a second set of windings electrically in series with the first set of windings, the first and second set of windings (106, 107) being configured to share a common core; a second bi-directional AC switch connected with one end directly between the first and second set of windings (106, 107) and with another end to a common ground, the first and second bi-directional AC switches (108, 109) being configured to have a switching frequency in a kilohertz range and to switch between on and off in alternating modes; and an output node connected to the second set of windings, the output node adapted to provide an output DC power, the output DC power being adapted to have an output voltage V o with an amplitude based on the input voltage V s, wherein V o = K v V s and K v is a predefined transfer constant that is proportional to a duty cycle D of the first and second bi-directional AC switches (108, 109), such that D = Δt c Δt c + Δt d, Δ t c is a switching time from the first bidirectional AC switch being switched on to the second bi-directional AC switch being switched on, and Δ t d is the discharge time when the second bi-directional AC switch is on, such that the first bi-directional AC switch is configured to be switched off when the second bi-directional AC switch is configured to be switched on; wherein the magnetic storage coupling unit is configured to transfer DC power from the direct voltage power source to the output node using magnetic storage coupling provided by the first and second set of windings (106, 107) such as to receive input DC power and transfer direct voltage as the input DC power from the input node to the output node providing the output DC power such that the first set of windings and the second set of windings are configured to provide magnetic storage of energy based on each of the first and the second bi-directional AC switches being configured to be continuously switched; wherein when an output load is zero, the output voltage is configured to remain proportional to the input voltage by said V o = K v V s.