PIC Programmer

Programing PIC10F200/202/204/206/220/222, PIC12F508/509/510, PIC16F54/57/59, PIC12F629/635/675/683, PIC16F627/628, PIC16F627A/628A/648A,PIC16F630/636/639/676, PIC16F684/685/687/688/689/690, PIC16F818/819, PIC16F84A, PIC16F87/88, PIC16F870/871/872/873/874/876/877, PIC16F873A/874A/876A/877A.)

JDM PIC programmer

R1 10 kOhm
R2 1,5 kOhm
C2 100 uF/16 V, submini.
C3 22 uF/16 V, submini.
D2 Zenerova dioda 5,1 V
D6 Zenerova dioda 8,2 V
D3, D4, D5, D7 1N4148
Q1, Q2 BC547B
http://www.ic-prog.com/

All PIC programmer

Parts:
Ic1 - 78L05
T1,T3 - bc547 npn
T2,T4 - bc557 pnp
D1,D2 - 1n4148
D3 - zener 13v
D4 - zener 12v
D5,D6 - zener 5v1
R1 - 1k2
R10- 270
R15- 1k
R7,R8 - 10k
R4,R5,R13,R14 - 1k8
R2,R3,R6,R9,R11,R12-5k6

c1,c2,c3 - 100nF
c4-10uF/16v
c5-100uF/25v
Led1 - red 5mm led
Led2 - green 5mm led

2x8pin,18pin,28pin i 40pin

Db9 zenski konektor za montazu na pcb
jp1 - 1x2 jumper
jp2 - 1x3 jumper
con1- 1x5 (in-circuit prog.konektor)
6mm conectorr for psu
pcb 68x65mm

A Highly Efficient DC Lamp Dimmer

The simplest lamp dimmer cir- cuit consists of a rheostat, in se- ries with the lamp, which one may adjust to obtain the required brightness. Such linear regulators are quite inefficient since a lot of power is wasted in them. Moreover, in the rheostat the moving contacts are likely to get damaged in the long run, as its value is frequently adjusted by moving the slider. Such linear control circuits provide an overall efficiency of no more than 50 per cent. This wastage of power can be avoided if one uses pulse width modulation (PWM) which can be made to control an electronic rheostat. The circuit shown here is based on PWM principle. Gate N1 and its associated components constitute an oscillator producing oscillations of approximately 200 Hz with a pulse width of 0.1 ms. This output is fed to transistor T1 for level shifting. At the output of this transistor is a potentiometer VR2, using which a DC component can be added to the pulses emerging from transistor T1. By adjusting this potentiometer/trimmer, one can have a good linear control of the lamp brightness from completely off state to 100 per cent on state. The signal is inverted by gate N2 and fed to MOSFET 12N10. IC CD40106 provides six inverting buffers with Schmitt trigger action. The buffers are capable of transforming slowly changing input signals into sharply defined jitter-free output signals. They are usually used as wave and pulse shapers. IC CD40106 possesses high immunity and low power consumption of standard CMOS ICs along with the ability to drive 10 LS-TTL loads. In this circuit loads up to 24W can be connected between MOSFET drain and 12V supply without using a heatsink. The loads can even be DC motors, miniature heating elements, etc. If one uses a low RDS (on) MOSFET, a higher efficiency can be achieved. By using the components as shown in the circuit, an efficiency of approximately 95 per cent can be achieved. The flexibility of the design makes it possible to change the MOSFET with a similar one, in case of non-availability of 12N10. The circuit by itself does not draw much current when the load is disconnected. Ensure proper ESD protection while handling the MOSFET to prevent damage. Lab note: The circuit was tested using MOSFET IRF640 with RDS (on)=0.18 ohm.

Suitable for alerting purposes Drives 12V Car bulbs

Parts:
R1 6K8 1/4W Resistor

R2 220K 1/4W Resistor

R3 22K 1/4W Resistor

C1 100µF 25V Electrolytic Capacitor

C2 10µF 25V Electrolytic Capacitor

D1 1N4002 100V 1A Diode

Q1 BC557 45V 100mA PNP Transistor

Q2 IRF530 100V 14A N-Channel Hexfet

LP1 One 12V 21W Car Filament Bulb or two wired in parallel (See Notes)

SW1 SPST Switch (3 Amp minimum)

Comments:

Derived from the Two-wire Lamp Flasher design, hosted on RED Free Circuit Designs since 1999, this astonishingly simple circuit allows one or two powerful 12V 21W car bulbs to be driven in flashing mode by means of a power MosFet.Devices of this kind are particularly suited for road, traffic and yard alerts and in all cases where mains supply is not available but a powerful flashing light is yet necessary.

Notes:
Flashing frequency can be varied within a limited range by changing C1 value.

As high dc currents are involved, please use suitably sized cables for battery and bulb(s) connections.