Chloroplast solar engines

Posted on Jan 9, 2013

The heart of the Chloroplast is the Motorola MC34164-3 Micro power Undervoltage Sensing Circuit (U1 in the following diagram). In normal use, this component monitors the voltage at pin 2, and applies a ground at pin 1 ( out ) when the monitored voltage drops below 3V (34164-3 monitors 3 volts, 34164-5 monitors 5 volts). This low will then be used to assert a RESET on a microprocessor circuit. The output (an open collector) will be open when the output is above the threshold voltage.

Chloroplast solar engines
Click here to download the full size of the above Circuit.

Through tinkering, I have discovered that placing a 220K to 270K resistor in series with the input of U1 will produce a significant hysteresis in this sensor's output. For instance, a 220K resistor as R2 will cause the output to ground until the s

Leave Comment

characters left:

Related Circuits

  • New Circuits



    Popular Circuits

    Decoding 4 buttons with two I/O's on AVR
    Logic probe
    Logic-Level Translators
    Arduino Online Thermometer circuit
    MultiKey - One Wire Keypad
    3W Stereo Amplifier schematic
    the design of the intellectual wireless signal transducer of ARM
    150W MP3 Car Amplifier
    555 tone generator circuit
    Glow Plug Driver for R/C Flightbox
    555 meter circuit diagram of a simple cavers