.. Reference Woodward, Stephen. A negative current source with PWM input and LM337 output. Materials on the topic Datasheet Fairchild LM317 Datasheet ON Semiconductor LM337 Datasheet Analog Devices LM4041 Datasheet Infineon BSS308PE ...
.. with a voltage doubler charge pump circuit. Materials on the topic Datasheet Texas Instruments SN74HC14 Datasheet Fairchild 1N5819 discovercircuits.com
.. current mirror that is. Chapter 11: The Current Mirror Materials on the topic Datasheet Texas Instruments LMC555 Datasheet Fairchild 2N3906 Datasheet Central Semiconductor 2N5087 Datasheet ON Semiconductor 2N5089
.. DAC ripple with analog subtraction. Materials on the topic Datasheet Analog Devices LM4041 Datasheet Diodes TL431 Datasheet Fairchild KSD1691 Datasheet Microchip TN0104