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Here is a compact low cost FM radio circuit using IC TDA 7000. This circuit is designed as per the data sheet and the result is excellent.Ideal for all category of electronic enthusiasts. Single Chip FM Radio Circuit Diagram The TDA7000 is a monolithic integrated circuit for mono FM portable radios, where a minimum on peripheral components is crucial. The IC TDA 7000 has a Frequency-Locked-Loop system with an intermediate frequency of 70 kHz. The intermediate frequency selectivity is achieved by active RC filters. The only function which needs alignment is the resonant circuit for the oscillator, thus selecting the reception frequency. Spurious reception is avoided by means of a mute circuit, which also eliminates too noisy input signals. Special steps are taken to meet the radiation requirements.  Notes:   For L1 and L2 wind 5 turns of 0.6 mm enameled Copper wire on a 4 mm dia plastic former. For antenna use a 50mm long insulated copper wire. IC TDA 7000 can withstand up...

This fm radio series fm radio receiver circuit that uses a single ic TDA. Quite easy to make this fm radio circuit, where all functions can be done by IC TDA, so we only add to the technical components only. External components are intended to support so you can determine its own range of frequencies to be used. Actually if you want to have the radio equipment are satisfactory you can buy a radio market. Now this type of radio is very varied and the prices varying as well. To be sure with the money of 30 thousand you can get the fm radio with satisfactory quality. Because now the most sold radio is using digital functions, unlike the more dominant is the first transistor radio. But if you are a hobby with experimental electronics, not the rupiah value but which you consider the value of their knowledge. For the working principle of this circuit does not really exist that must be addressed because all the functions already performed by the internal circuit is ic TDA. That if we do a sur...

We can build a divider circuit using only a single chip component, a special purpose integrated circuit AD532. We can configure the AD532 as a two quadrant divider by connecting the multiplier cell in the feedback loop of the op amp and using the Z terminal as a signal input, as shown in the following figure. Gaining Upr note, the output error is given approximately by 10 Vεm/ (X1-X2), where εm is the total error specification for the multiply mode and bandwidth by fm x (X1-X2)/10 V, where fm is the bandwidth of the multiplier.  The X input is restricted to negative values to avoid positive feedback. Thus, connect the input to X and the offset null to X2 for single ended negative inputs. For single ended positive inputs (0V to +10V), connect the input to X2 and the offset null to X1. Gain (S.F) and offset (X0) adjustment are recommended as shown and explained in the following table for optimum performance. The useful range in denominator input is approximately 500 mV ≤ (X1-X2) ≤ 10...

This circuit is used to drives relays of 24 and 18 VDC from a 12 Volt power supply. The basic circuit on the IC NE 555 timer and use this circuit with almost any NPN or PNP power transistor. Parts: Resistor R1 = 47K R2 = 10K R3 = 56R Capacitor C1 = 0.01uF C2 = 0.01uF C3 = 0.001uF C4 = 0.1uF C5 = 50uF Transistor Q1 = TIP29 , TIP120, 2N4922, TIP61, TIP110, or 2N4921 Q2 = TIP30 , TIP125, 2N4919, TIP62, TIP115, or 2N4918 IC U1 = NE555