• MEDIUM POWER 125KHZ OSCILLATOR 2
  This circuit is similar to MEDIUM POWER 125KHZ OSCILLATOR but adds even more inverters in parallel to deliver yet more power. The values shown are for 125KHz.

• MICROPOWER C-MOS OSCILLATOR, DRAWS ONLY 0.5uA
  If truly low power oscillators interest you, this circuit draws a mere 2 microwatts (500nA) from a 6v battery. It uses a very inexpensive C-MOS IC to produce a frequency of 2Hz. However, by changing the component values you can push it to 300Hz. The circuit draws much less current than traditional C-MOS oscillators using a Schmitt trigger inverter. It also produces fast leading edges. However, if you need more drive current, a C-MOS buffer should be included. Published in EDN, September 2, 1993.

• PRECISION ULTRA LOWER POWER OSCILLATOR
  This circuit works much like the classic 555 timer, but draws only about 1.5 microamps from a 3 volt battery. It is highly stable under varying temperature and supply voltages.

• PRECISION ULTRA LOWER POWER OSCILLATOR
  This circuit works much like the classic 555 timer, but draws only about 1.5 microamps from a 3 volt battery. It is highly stable under varying temperature and supply voltages.

• VERY LOW POWER ASTABLE MULTIVIBRATOR
  This classic circuit draws only 200 nanoamps from a 1.5v supply.

• VERY LOW POWER GATED CRYSTAL OSCILLATOR
  The circuit gates the output of a continuously operating 32KHz crystal oscillator to the input of a C-MOS buffer when clock pulses are needed. The technique gets around the problem of a slow starting crystal oscillator by keeping the oscillator going and switching on a transistor power stage only as needed. The method keeps the standby power consumption to a very low 1uA when used with a 3v supply.

Dave's Circuits:  Astable Oscillator Circuits         Audio Oscillator Circuits         Crystal Oscillators              
RF (Radio Frequency) Oscillators         Sine Wave Oscillators           Triangle Wave Oscillators        Voltage Controlled Oscillators (VCO)