Circuits & Schematics: Volt - 7

61. Basic UPS
    Circuits Beginners Supply Power
    .. Collinson Description This circuit is a simple form of the commercial UPS, the circuit provides a constant regulated 5 Volt output and an unregulated 12 Volt supply. In the event of electrical supply line failure the battery takes over, ...
    Dec 23, 2010

62. Black Light
    Circuits Supply Light Power
    .. circuit is a simple ultraviolate light that can be powered by a 6 volt battery or power supply that is capable of supplying 1 or more amps. Circuit diagram Parts C1 0.0047uf Mono ...
    Dec 27, 2010

63. High Current MOSFET Toggle Switch with Debounced Push Button.
    Circuits Power
    .. that might cause false triggering if the switches are located far away from the circuit. The circuit was tested using a 12 volt, 25 watt automotive lamp, and IRFZ44 . Other MOSFETs can probably be used. bowdenshobbycircuits.info
    Jan 6, 2011
64. Solar Cell Phone Charger
    Circuits Supply Power Solar
    .. Wenzel This little gadget uses a small 3 volt solar cell to charge a 6 volt NiCad battery pack which, in turn, may be used to charge many models of cell phones ...
    Feb 24, 2011
65. SEPIC/Ćuk converter sprouts second output
    Circuits Supply Texas Instruments LM3488
    .. Figure 1. Dual-output hybrid SEPIC-Ćuk converter. To find out the output voltages we apply the principle of inductor volt-second balance and capacitor charge balance. To simplify the calculus, we neglect the voltage drop over the ...
    Aug 10, 2017
66. Power Supply Monitor for TTL
    Circuits Beginners Supply Power Linear Technology LTC1042
    .. simple TTL power supply monitor circuit monitors the 5-volt level TTL power line and gives a signal whether the supply voltage is outside or within the necessary range or ...
    Feb 24, 2011
67. 255-Voice PCM Sound Generator. Part 1. Schematic
    Circuits Audio Games Microcontrollers Usage
    .. the output current exceeds the rating but it is no problem because the output current is limited by output impedance at 3.3 volt supply voltage even if the output pin is tied to the rail. Therefore it cannot sound loud but it will create ...
    Mar 14, 2011
68. Isolated-FET Pulse Driver Reduces Size, Power Consumption
    Jaime Castelló José María Espí Rafael García-Gil
    Circuits Power APT APT40GF120JRD
    .. resets through R 3 and D 3 . The voltage at T 1 ’s secondary winding goes slightly negative to balance the core's volt-second characteristic, which forward-biases Q 3 ’s body diode without current, and Q 4 ’s body diode ...
    Mar 30, 2022
69. Simple fixture statically tests programmable-gain amplifiers
    Marián Štofka
    Circuits Measurement Amplifiers Analog Devices AD8253
    .. first glance. However, any fraction of a millivolt of the input-voltage offset times a gain of 1000 yields a fraction of a volt at the output. When you calculate the differences of the 10.02-mV and 0 V output voltages for the respective ...
    Mar 29, 2023
70. Multiple power supplies fortify high-side gate control
    Steven Hendrix
    Circuits Supply Microchip MIC4680
    .. transition. Instead, transistors Q610 and Q611 are simple source-followers. As the gate voltage rises more than about a volt above the present value of net VeeDrive shown in Figure 1 at the source terminals of Q610 and Q611, Q611 turns ...
    Feb 14, 2024

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