.. device that can control DC devices which draw up to a few amps of current. The circuit may be used in either 12 or 24 Volt systems with only a few minor wiring changes. This device has been used to control the brightness of an ...
.. hobby circuit of an automatic garden light using a LDR and 6V/5W solar panel. During day time, the internal rechargeable 6 Volt SLA battery receives charging current from the connected solar panel through polarity protection diode D9 and ...
.. is used as power control. For hum-free operation, operate the transmitter on a 12V rechargeable battery pack of 10 x 1.2-volt Ni-Cd cells. Transistor T2 must be mounted on a heat sink. Do not switch on the transmitter without a matching ...
Andy Collinson Description This is a replacement power source for 1.3V mercury cells or other small batteries. It has many uses and I use this circuit in my computer to power a front panel multi adapter which has a digital thermometer. Notes This ...
.. T1 is a transformer that monitors the electric supply. It is rectified by a bridge rectifier and smoothed by C2 giving a 15 Volt DC supply. The 15V supply is the input to the LM317 regulator. The regulator output is set by R1 and R7 to about ...
.. in the inductor. The circuit is built around a quad low noise FET input op-amp, type TL084. Power supply is a single 9 Volt battery, the supply being divided by R5 and R6. C1 and C2 help smooth variations in battery voltage, S1 is the on ...
.. voltage settings than the battery you have connected. I would recommend monitoring voltage and current via the PC or with a volt-ammeter to be sure. My Smart Battery reports back a Max Charge Current of 0 if the voltage is above the max ...
.. shows the lowest 4 digits. Button #1 switches to the next higher 4 digits while held down. Button #2 resets the count. VoLt Voltmeter The voltmeter uses the power going into the probe as a voltage reference. The current implementation ...
.. moment too much current is flowing biases Q1 and drops the output voltage. The output voltage is: 1.2 × (P1+R2+R3)/R3 volt. Current limiting kicks in when the current is about 0.6/R1 amp. For a 6-volt battery which requires ...