Figure 2 foot emitting a flashing light switch circuit indication. when s is closed, normal light E lights flashing hair light indicates power loss of power does not work shoes..
Contact resistance measuring circuit shown in FIG. It mainly consists of a constant current circuit and amplifying circuit. Operational amplifier 1C1 and form a transistor VT a..
Constituting simple LM3915 audio power meter circuit diagram Note: If the internal resistance of 4 speaker when, Rx take 10k If the internal resistance 8 speaker when, Rx take ..
Explanation: This is a simple and low-cost broad-band high-frequency electric field strength meters. Field strength of the radio signal into a DC measurement, it is measured. R..
Dual drive ICs 10LED level meter circuit Dual-drive IC is shown in the IO LED level meter circuit, the figure of two TLM8101 driver IC can also be used instead. ..
Detecting electrical equipment, sometimes in order to more accurately measure the electrical current, the need to disconnect the circuit in series into the ammeter measurements..
Direct measurement of soil content measurement circuit different areas of soil moisture, salinity, nitrogen, pH, etc., for soil improvement, various types of agricultural crops..
Figure 1.88 using the loudness of several tapped the potentiometer control circuit. In FIG. (A), and between the tap and the input of the potentiometer and the land respectivel..
DC voltage present on the telephone line is usually about 45 to 50V, on-hook and off-hook to 6V. The step-down circuit relay is activated. Relay control tape recorder. Audio is..
Enhancement circuit as shown in the high-frequency component of the video signal can be increased, thereby enhancing the contrast of the TV image, it can also be connected to t..
FIG. 1 is a circuit diagram of it, it is in the audio circuit from the resistance between the two leads to a probe to rain alarm. Fig. 2 with CCL to make a probe connected to t..
Explanation Here is a simple fire alarm circuit based on an LDR fire detection sensor. Smoke generated during circuit generates an audible alarm, fire smoke in case of fire. Al..
Door alarm here with a time recognition, the owner opened the door is normally open the door, open the door to complete the action within the general 30s, so it does not alarm,..
Ding for the circuit principle: care, vs SCR trigger grounded, it is in the off state. When someone leads A burglar broke, the SCR trigger end to give a trigger voltage is turn..
Conventional digital home theater amplifier requires the use of a dedicated integrated circuit, and such a small integrated circuit manufacturers, the price is higher. This cir..
Digital precision pressure tester circuit shown in Fig. MAX1457 external ROM selection 93C66 type 4096b E2PROM. After power MCS end is pulled to a high level, check the main ch..
Digital pressure measuring circuit AD7710/7715/7730 multifunction digital sensor signal conditioning ICs. They integrate a digital interface with the control port, a clock gene..
Digital pulse width measurement circuit is shown. It uses a l00kHz reference frequency, the count in the pulse width of the signal, the count value of the product of the resolu..
Dien stone crystal oscillation circuit CM OS inverting clamor ways to ensure work as accurate because it uses a BCD counter Wong (IC2, hi) so maximum oscillation frequency equa..
Figure 4-14 is a digital integrated circuit consisting of 16 preset potentiometers Siniperca electronic circuits. It consists of three parts: input into the controller. Presett..
Figure 4-18 by volume potentiometer T (Xi 153AP and tone potentiometer T ( 155AP consisting of volume, tone control circuit circuit, Rx, cx clock oscillation element, the value..
Crossing various sawtooth voltage generator, the common denominator is the use of a capacitor charge. Discharge effect to generate a sawtooth voltage of the forward and inverse..
Fig variable frequency oscillator transistor circuit, which is mainly an oscillator, the crystal resonator and varactor circuit by the transistor diode, the output of the ampli..
Field scanning circuit circuit and sawtooth waveforms Sawtooth signal generating circuit color television field scan is an indispensable circuit shown in Figure 1 is a Toshiba ..
Field effect transistor amplifier has fixed bias input source with feedback. Therefore, the input impedance is very high and very low capacitance. Drive a field effect transist..
Fast and efficient charging is higher than conventional charging ten times to several times the current charge. When the battery voltage rises to a predetermined value when (va..
Fast charging circuit (TEA1102) Shown is a chemical for a variety of battery fast charging circuit, which is based on fast charge controller TEA1102 nuclear charging circuit of..
Fast charging circuit It shows voltage and current waveforms and fast charge circuit configuration of the charger. Detection and control circuit of the circuit is composed of t..